Merge development

145 files changed, 2000 insertions, 589 deletions

diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index 20778f8bb..8f13049e9 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547747677,
diff --git a/packages/0x.js/CHANGELOG.md b/packages/0x.js/CHANGELOG.md
index b0279f097..2ea296ea5 100644
--- a/packages/0x.js/CHANGELOG.md
+++ b/packages/0x.js/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v3.0.3 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 64054d288..0dce40010 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "0x.js",
-    "version": "3.0.3",
+    "version": "4.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,7 +24,7 @@
         "test:coverage": "nyc npm run test --all && yarn coverage:report:lcov",
         "coverage:report:lcov": "nyc report --reporter=text-lcov > coverage/lcov.info",
         "clean": "shx rm -rf _bundles lib test_temp src/generated_contract_wrappers generated_docs",
-        "build:umd:prod": "NODE_ENV=production webpack",
+        "build:umd:prod": "NODE_ENV=production node --max_old_space_size=8192 ../../node_modules/.bin/webpack --mode production",
         "build:commonjs": "tsc -b",
         "docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES"
     },
@@ -42,11 +42,11 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/contract-addresses": "^2.2.0",
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/migrations": "^2.4.0",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/contract-addresses": "^2.2.1",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/migrations": "^3.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
@@ -72,20 +72,20 @@
         "webpack": "^4.20.2"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/base-contract": "^3.0.13",
-        "@0x/contract-wrappers": "^5.0.1",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/order-watcher": "^2.4.3",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/assert": "^2.0.1",
+        "@0x/base-contract": "^4.0.1",
+        "@0x/contract-wrappers": "^7.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/order-watcher": "^3.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/web3-provider-engine": "^14.0.0",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "web3-provider-engine": "14.0.6"
     },
     "publishConfig": {
diff --git a/packages/abi-gen-templates/CHANGELOG.json b/packages/abi-gen-templates/CHANGELOG.json
index 7d444d0ca..94afa8db1 100644
--- a/packages/abi-gen-templates/CHANGELOG.json
+++ b/packages/abi-gen-templates/CHANGELOG.json
@@ -6,7 +6,8 @@
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/abi-gen-templates/CHANGELOG.md b/packages/abi-gen-templates/CHANGELOG.md
index 5dd6d03e0..cdaee6264 100644
--- a/packages/abi-gen-templates/CHANGELOG.md
+++ b/packages/abi-gen-templates/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/abi-gen-templates/package.json b/packages/abi-gen-templates/package.json
index af66aeba0..dfa9248c7 100644
--- a/packages/abi-gen-templates/package.json
+++ b/packages/abi-gen-templates/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen-templates",
-    "version": "1.0.2",
+    "version": "2.0.0",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/abi-gen-wrappers/CHANGELOG.json b/packages/abi-gen-wrappers/CHANGELOG.json
index c604302b5..f714100ce 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.json
+++ b/packages/abi-gen-wrappers/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "2.2.0",
diff --git a/packages/abi-gen-wrappers/CHANGELOG.md b/packages/abi-gen-wrappers/CHANGELOG.md
index 294f39439..75ac81d45 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.md
+++ b/packages/abi-gen-wrappers/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v2.2.0 - _January 15, 2019_
 
     * Added `MultiAssetProxy` (#1503)
diff --git a/packages/abi-gen-wrappers/package.json b/packages/abi-gen-wrappers/package.json
index 842ac024a..ce6183169 100644
--- a/packages/abi-gen-wrappers/package.json
+++ b/packages/abi-gen-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen-wrappers",
-    "version": "2.2.0",
+    "version": "3.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,19 +30,19 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen-wrappers/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.22",
-        "@0x/abi-gen-templates": "^1.0.2",
-        "@0x/tslint-config": "^2.0.2",
-        "@0x/types": "^1.5.2",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "ethereum-types": "^1.1.6",
+        "@0x/abi-gen": "^2.0.1",
+        "@0x/abi-gen-templates": "^2.0.0",
+        "@0x/tslint-config": "^3.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "shx": "^0.2.2"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.13"
+        "@0x/base-contract": "^4.0.1"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/abi-gen/CHANGELOG.json b/packages/abi-gen/CHANGELOG.json
index 173617b65..3e6eb9038 100644
--- a/packages/abi-gen/CHANGELOG.json
+++ b/packages/abi-gen/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/abi-gen/CHANGELOG.md b/packages/abi-gen/CHANGELOG.md
index af74218b8..17085c515 100644
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.22 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index 7f968893c..3856f29b9 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen",
-    "version": "1.0.22",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -31,13 +31,13 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen/README.md",
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
         "chalk": "^2.3.0",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "glob": "^7.1.2",
         "handlebars": "^4.0.11",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "mkdirp": "^0.5.1",
         "sleep": "^5.1.1",
         "tmp": "^0.0.33",
@@ -45,18 +45,18 @@
         "yargs": "^10.0.3"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/glob": "5.0.35",
         "@types/handlebars": "^4.0.36",
-        "@types/mkdirp": "^0.5.1",
+        "@types/mkdirp": "^0.5.2",
         "@types/node": "*",
         "@types/sleep": "^0.0.7",
         "@types/tmp": "^0.0.33",
-        "@types/yargs": "^10.0.0",
-        "chai": "^4.1.2",
+        "@types/yargs": "^11.0.0",
+        "chai": "^4.0.1",
         "dirty-chai": "^2.0.1",
         "make-promises-safe": "^1.1.0",
-        "mocha": "^5.2.0",
+        "mocha": "^4.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
diff --git a/packages/assert/CHANGELOG.json b/packages/assert/CHANGELOG.json
index 278b7dfa1..8ca292485 100644
--- a/packages/assert/CHANGELOG.json
+++ b/packages/assert/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/assert/CHANGELOG.md b/packages/assert/CHANGELOG.md
index 5a4af165a..0050d0105 100644
--- a/packages/assert/CHANGELOG.md
+++ b/packages/assert/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.23 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/assert/package.json b/packages/assert/package.json
index 38481d6f0..6b87d67f2 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/assert",
-    "version": "1.0.23",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/assert/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/valid-url": "^1.0.2",
@@ -44,10 +44,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "lodash": "^4.17.5",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "lodash": "^4.17.11",
         "valid-url": "^1.0.9"
     },
     "publishConfig": {
diff --git a/packages/asset-buyer/CHANGELOG.json b/packages/asset-buyer/CHANGELOG.json
index 2de603de0..2b567bbb2 100644
--- a/packages/asset-buyer/CHANGELOG.json
+++ b/packages/asset-buyer/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "5.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "5.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "5.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "4.1.0",
diff --git a/packages/asset-buyer/CHANGELOG.md b/packages/asset-buyer/CHANGELOG.md
index f2a3d2236..d21d89b8e 100644
--- a/packages/asset-buyer/CHANGELOG.md
+++ b/packages/asset-buyer/CHANGELOG.md
@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v5.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v5.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
+## v4.1.0 - _Invalid date_
+
+    * Adds new public method getLiquidityForAssetDataAsync, and exposes getOrdersAndFillableAmountsAsync as public method (#1512)
+
 ## v4.0.2 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/asset-buyer/package.json b/packages/asset-buyer/package.json
index 0f79ac06a..ccaaf5d87 100644
--- a/packages/asset-buyer/package.json
+++ b/packages/asset-buyer/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-buyer",
-    "version": "4.0.2",
+    "version": "5.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -36,22 +36,22 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/asset-buyer/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/connect": "^3.0.13",
-        "@0x/contract-wrappers": "^5.0.1",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "ethereum-types": "^1.1.6",
-        "lodash": "^4.17.5"
+        "@0x/assert": "^2.0.1",
+        "@0x/connect": "^4.0.2",
+        "@0x/contract-wrappers": "^7.0.1",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
-        "@types/lodash": "^4.14.116",
+        "@0x/tslint-config": "^3.0.0",
+        "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
         "chai": "^4.0.1",
diff --git a/packages/base-contract/CHANGELOG.json b/packages/base-contract/CHANGELOG.json
index 63b1fe8f7..d3333dff6 100644
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/base-contract/CHANGELOG.md b/packages/base-contract/CHANGELOG.md
index 975a56fd4..ae705dab7 100644
--- a/packages/base-contract/CHANGELOG.md
+++ b/packages/base-contract/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v3.0.13 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index db09b16a1..ac7b3fb87 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/base-contract",
-    "version": "3.0.13",
+    "version": "4.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/base-contract/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
         "make-promises-safe": "^1.1.0",
@@ -40,12 +40,12 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "ethereum-types": "^1.1.6",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/connect/CHANGELOG.json b/packages/connect/CHANGELOG.json
index c2f16d96a..feeb057d5 100644
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/connect/CHANGELOG.md b/packages/connect/CHANGELOG.md
index 7556aae72..af1b088c9 100644
--- a/packages/connect/CHANGELOG.md
+++ b/packages/connect/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v3.0.13 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/connect/package.json b/packages/connect/package.json
index 15a4c12f1..10c694ca9 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/connect",
-    "version": "3.0.13",
+    "version": "4.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,24 +44,24 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/connect/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "lodash": "^4.17.5",
-        "query-string": "^5.0.1",
+        "@0x/assert": "^2.0.1",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "lodash": "^4.17.11",
+        "query-string": "^6.0.0",
         "sinon": "^4.0.0",
         "uuid": "^3.3.2",
         "websocket": "^1.0.25"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/fetch-mock": "^6.0.3",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
-        "@types/query-string": "^5.0.1",
+        "@types/query-string": "^5.1.0",
         "@types/sinon": "^2.2.2",
         "@types/uuid": "^3.4.3",
         "@types/websocket": "^0.0.39",
diff --git a/packages/contract-addresses/CHANGELOG.json b/packages/contract-addresses/CHANGELOG.json
index 8800f2f73..c420df69d 100644
--- a/packages/contract-addresses/CHANGELOG.json
+++ b/packages/contract-addresses/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "timestamp": 1549373905,
+        "version": "2.2.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.2.0",
         "changes": [
             {
diff --git a/packages/contract-addresses/CHANGELOG.md b/packages/contract-addresses/CHANGELOG.md
index 1f3d187a4..deab2b398 100644
--- a/packages/contract-addresses/CHANGELOG.md
+++ b/packages/contract-addresses/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.2.1 - _February 5, 2019_
+
+    * Dependencies updated
+
 ## v2.2.0 - _January 15, 2019_
 
     * Added migration for `MultiAssetProxy` contract (#1503)
diff --git a/packages/contract-addresses/package.json b/packages/contract-addresses/package.json
index 260322081..84cc052c9 100644
--- a/packages/contract-addresses/package.json
+++ b/packages/contract-addresses/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-addresses",
-    "version": "2.2.0",
+    "version": "2.2.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/contract-wrappers/CHANGELOG.json b/packages/contract-wrappers/CHANGELOG.json
index 9cea720c8..803863da3 100644
--- a/packages/contract-wrappers/CHANGELOG.json
+++ b/packages/contract-wrappers/CHANGELOG.json
@@ -1,12 +1,30 @@
 [
     {
-        "version": "6.0.1",
+        "timestamp": 1549504360,
+        "version": "7.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "7.0.0",
         "changes": [
             {
                 "note": "Fix OrderValidatorWrapper constructor to use the correct address",
                 "pr": 1568
+            },
+            {
+                "note": "Use new `ZeroExTransaction` interface",
+                "pr": 1576
+            },
+            {
+                "note": "Rename `getTransactionHex` to `getTransactionHashHex`",
+                "pr": 1576
             }
-        ]
+        ],
+        "timestamp": 1549452781
     },
     {
         "version": "6.0.0",
diff --git a/packages/contract-wrappers/CHANGELOG.md b/packages/contract-wrappers/CHANGELOG.md
index 28cbf2ec6..fee13b218 100644
--- a/packages/contract-wrappers/CHANGELOG.md
+++ b/packages/contract-wrappers/CHANGELOG.md
@@ -5,6 +5,20 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v7.0.1 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v7.0.0 - _February 6, 2019_
+
+    * Fix OrderValidatorWrapper constructor to use the correct address (#1568)
+    * Use new `ZeroExTransaction` interface (#1576)
+    * Rename `getTransactionHex` to `getTransactionHashHex` (#1576)
+
+## v6.0.0 - _Invalid date_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v5.0.1 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/contract-wrappers/package.json b/packages/contract-wrappers/package.json
index cc7dc1a3e..9fcf2a62d 100644
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-wrappers",
-    "version": "5.0.1",
+    "version": "7.0.1",
     "description": "Smart TS wrappers for 0x smart contracts",
     "keywords": [
         "0xproject",
@@ -37,15 +37,15 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/migrations": "^2.4.0",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/migrations": "^3.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
         "@types/sinon": "^2.2.2",
-        "@types/uuid": "^3.4.2",
+        "@types/uuid": "^3.4.3",
         "@types/web3-provider-engine": "^14.0.0",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
@@ -65,26 +65,26 @@
         "web3-provider-engine": "14.0.6"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/assert": "^1.0.23",
-        "@0x/contract-addresses": "^2.2.0",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/assert": "^2.0.1",
+        "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contracts-test-utils": "^2.0.1",
-        "@0x/fill-scenarios": "^1.1.2",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "ethereum-types": "^1.1.6",
+        "@0x/contracts-test-utils": "^3.0.2",
+        "@0x/fill-scenarios": "^2.0.2",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-blockstream": "6.0.0",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
         "js-sha3": "^0.7.0",
-        "lodash": "^4.17.5",
-        "uuid": "^3.1.0"
+        "lodash": "^4.17.11",
+        "uuid": "^3.3.2"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/contract-wrappers/src/utils/transaction_encoder.ts b/packages/contract-wrappers/src/utils/transaction_encoder.ts
index 0cf08a8fe..307487a9b 100644
--- a/packages/contract-wrappers/src/utils/transaction_encoder.ts
+++ b/packages/contract-wrappers/src/utils/transaction_encoder.ts
@@ -1,9 +1,9 @@
 import { ExchangeContract } from '@0x/abi-gen-wrappers';
 
 import { schemas } from '@0x/json-schemas';
-import { eip712Utils } from '@0x/order-utils';
+import { transactionHashUtils } from '@0x/order-utils';
 import { Order, SignedOrder } from '@0x/types';
-import { BigNumber, signTypedDataUtils } from '@0x/utils';
+import { BigNumber } from '@0x/utils';
 import _ = require('lodash');
 
 import { assert } from './assert';
@@ -19,23 +19,22 @@ export class TransactionEncoder {
         this._exchangeInstance = exchangeInstance;
     }
     /**
-     * Encodes the transaction data for use with the Exchange contract.
+     * Hashes the transaction data for use with the Exchange contract.
      * @param data The ABI Encoded 0x Exchange method. I.e fillOrder
      * @param salt A random value to provide uniqueness and prevent replay attacks.
      * @param signerAddress The address which will sign this transaction.
-     * @return An unsigned hex encoded transaction for use in 0x Exchange executeTransaction.
+     * @return The hash of the 0x transaction.
      */
-    public getTransactionHex(data: string, salt: BigNumber, signerAddress: string): string {
+    public getTransactionHashHex(data: string, salt: BigNumber, signerAddress: string): string {
         const exchangeAddress = this._getExchangeContract().address;
-        const executeTransactionData = {
+        const transaction = {
+            verifyingContractAddress: exchangeAddress,
             salt,
             signerAddress,
             data,
         };
-        const typedData = eip712Utils.createZeroExTransactionTypedData(executeTransactionData, exchangeAddress);
-        const eip712MessageBuffer = signTypedDataUtils.generateTypedDataHash(typedData);
-        const messageHex = `0x${eip712MessageBuffer.toString('hex')}`;
-        return messageHex;
+        const hashHex = transactionHashUtils.getTransactionHashHex(transaction);
+        return hashHex;
     }
     /**
      * Encodes a fillOrder transaction.
diff --git a/packages/contract-wrappers/test/exchange_wrapper_test.ts b/packages/contract-wrappers/test/exchange_wrapper_test.ts
index a1d60dc6e..acd30495b 100644
--- a/packages/contract-wrappers/test/exchange_wrapper_test.ts
+++ b/packages/contract-wrappers/test/exchange_wrapper_test.ts
@@ -1,6 +1,6 @@
 import { BlockchainLifecycle, callbackErrorReporter } from '@0x/dev-utils';
 import { FillScenarios } from '@0x/fill-scenarios';
-import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
+import { assetDataUtils, orderHashUtils, signatureUtils } from '@0x/order-utils';
 import { DoneCallback, RevertReason, SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
@@ -368,6 +368,23 @@ describe('ExchangeWrapper', () => {
             await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
             isPreSigned = await contractWrappers.exchange.isPreSignedAsync(hash, signerAddress);
             expect(isPreSigned).to.be.true();
+
+            const preSignedSignature = '0x06';
+            const isValidSignature = await contractWrappers.exchange.isValidSignatureAsync(
+                hash,
+                signerAddress,
+                preSignedSignature,
+            );
+            expect(isValidSignature).to.be.true();
+
+            // Test our TS implementation of signature validation
+            const isValidSignatureInTs = await signatureUtils.isValidSignatureAsync(
+                provider,
+                hash,
+                preSignedSignature,
+                signerAddress,
+            );
+            expect(isValidSignatureInTs).to.be.true();
         });
     });
     describe('#getVersionAsync', () => {
diff --git a/packages/contract-wrappers/test/transaction_encoder_test.ts b/packages/contract-wrappers/test/transaction_encoder_test.ts
index ef9eb2cf3..a996b9f08 100644
--- a/packages/contract-wrappers/test/transaction_encoder_test.ts
+++ b/packages/contract-wrappers/test/transaction_encoder_test.ts
@@ -83,8 +83,8 @@ describe('TransactionEncoder', () => {
             signerAddress: string = takerAddress,
         ): Promise<void> => {
             const salt = generatePseudoRandomSalt();
-            const encodedTransaction = encoder.getTransactionHex(data, salt, signerAddress);
-            const signature = await signatureUtils.ecSignHashAsync(provider, encodedTransaction, signerAddress);
+            const transactionHash = encoder.getTransactionHashHex(data, salt, signerAddress);
+            const signature = await signatureUtils.ecSignHashAsync(provider, transactionHash, signerAddress);
             txHash = await contractWrappers.exchange.executeTransactionAsync(
                 salt,
                 signerAddress,
diff --git a/packages/contracts-gen/package.json b/packages/contracts-gen/package.json
index 8526feabc..9f9f14c4a 100644
--- a/packages/contracts-gen/package.json
+++ b/packages/contracts-gen/package.json
@@ -26,7 +26,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/contracts-gen/README.md",
     "dependencies": {
-        "@0x/types": "^1.5.2",
+        "@0x/types": "^2.0.1",
         "@0x/utils": "^3.0.1",
         "@0x/typescript-typings": "^3.0.8",
         "ethereum-types": "^1.1.6",
diff --git a/packages/dev-tools-pages/package.json b/packages/dev-tools-pages/package.json
index feab72856..7006e6ca9 100644
--- a/packages/dev-tools-pages/package.json
+++ b/packages/dev-tools-pages/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-tools-pages",
-    "version": "0.0.14",
+    "version": "0.0.17",
     "engines": {
         "node": ">=6.12"
     },
@@ -26,7 +26,7 @@
     },
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/react-shared": "^1.1.2",
+        "@0x/react-shared": "^2.0.2",
         "basscss": "^8.0.3",
         "bowser": "^1.9.3",
         "highlight.js": "^9.13.1",
@@ -46,7 +46,7 @@
         "@types/node": "*",
         "@types/react": "^16.4.2",
         "@types/react-dom": "^16.0.7",
-        "@types/react-loadable": "^5.4.1",
+        "@types/react-loadable": "^5.4.2",
         "@types/react-lottie": "^1.2.0",
         "@types/react-router-dom": "^4.0.4",
         "@types/react-tabs": "^2.3.0",
diff --git a/packages/dev-utils/CHANGELOG.json b/packages/dev-utils/CHANGELOG.json
index d05e41d2d..1f0ec9b93 100644
--- a/packages/dev-utils/CHANGELOG.json
+++ b/packages/dev-utils/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/dev-utils/CHANGELOG.md b/packages/dev-utils/CHANGELOG.md
index 958fded86..652fc6e96 100644
--- a/packages/dev-utils/CHANGELOG.md
+++ b/packages/dev-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.24 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 4ab1d6439..183e20fc1 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-utils",
-    "version": "1.0.24",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/dev-utils/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "make-promises-safe": "^1.1.0",
@@ -41,15 +41,15 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/web3-provider-engine": "^14.0.0",
         "chai": "^4.0.1",
-        "ethereum-types": "^1.1.6",
-        "lodash": "^4.17.5"
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/ethereum-types/CHANGELOG.json b/packages/ethereum-types/CHANGELOG.json
index c106d43a9..4a75b4c9a 100644
--- a/packages/ethereum-types/CHANGELOG.json
+++ b/packages/ethereum-types/CHANGELOG.json
@@ -6,7 +6,8 @@
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/ethereum-types/CHANGELOG.md b/packages/ethereum-types/CHANGELOG.md
index c1857495d..45a82478e 100644
--- a/packages/ethereum-types/CHANGELOG.md
+++ b/packages/ethereum-types/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.1.6 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/ethereum-types/package.json b/packages/ethereum-types/package.json
index bd3748058..5f3ea2189 100644
--- a/packages/ethereum-types/package.json
+++ b/packages/ethereum-types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "ethereum-types",
-    "version": "1.1.6",
+    "version": "2.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/ethereum-types/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
diff --git a/packages/fill-scenarios/CHANGELOG.json b/packages/fill-scenarios/CHANGELOG.json
index beffdd097..faa702fcf 100644
--- a/packages/fill-scenarios/CHANGELOG.json
+++ b/packages/fill-scenarios/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/fill-scenarios/CHANGELOG.md b/packages/fill-scenarios/CHANGELOG.md
index 7df8b5ab3..66966d3ec 100644
--- a/packages/fill-scenarios/CHANGELOG.md
+++ b/packages/fill-scenarios/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.1.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/fill-scenarios/package.json b/packages/fill-scenarios/package.json
index d882aba76..8ec4a1111 100644
--- a/packages/fill-scenarios/package.json
+++ b/packages/fill-scenarios/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/fill-scenarios",
-    "version": "1.1.2",
+    "version": "2.0.2",
     "description": "0x order fill scenario generator",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
@@ -20,7 +20,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/fill-scenarios/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/lodash": "4.14.104",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
@@ -28,17 +28,17 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/base-contract": "^3.0.13",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/base-contract": "^4.0.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "ethereum-types": "^1.1.6",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/instant/package.json b/packages/instant/package.json
index f7e15a3e0..07e817324 100644
--- a/packages/instant/package.json
+++ b/packages/instant/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/instant",
-    "version": "1.0.8",
+    "version": "1.0.11",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,50 +42,50 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/instant/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/asset-buyer": "^4.0.2",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/assert": "^2.0.1",
+        "@0x/asset-buyer": "^5.0.2",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "babel-runtime": "^6.26.0",
         "bowser": "^1.9.4",
         "copy-to-clipboard": "^3.0.8",
-        "ethereum-types": "^1.1.6",
-        "lodash": "^4.17.5",
-        "polished": "^2.2.0",
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11",
+        "polished": "^1.9.2",
         "react": "^16.5.2",
         "react-dom": "^16.5.2",
         "react-redux": "^5.0.7",
         "redux": "^4.0.0",
         "redux-devtools-extension": "^2.13.5",
         "rollbar": "^2.5.0",
-        "styled-components": "^4.0.2",
+        "styled-components": "^4.1.1",
         "ts-optchain": "^0.1.1"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@static/discharge": "https://github.com/0xProject/discharge.git",
         "@types/enzyme": "^3.1.14",
         "@types/enzyme-adapter-react-16": "^1.0.3",
         "@types/jest": "^23.3.5",
-        "@types/lodash": "^4.14.116",
+        "@types/lodash": "4.14.104",
         "@types/node": "*",
-        "@types/react": "^16.4.16",
-        "@types/react-dom": "^16.0.8",
+        "@types/react": "16.4.16",
+        "@types/react-dom": "16.0.6",
         "@types/react-redux": "^6.0.9",
         "@types/redux": "^3.6.0",
         "@types/styled-components": "4.0.1",
         "awesome-typescript-loader": "^5.2.1",
         "babel-loader": "^7.1.5",
-        "babel-preset-env": "^1.7.0",
-        "babel-plugin-transform-runtime": "^6.23.0",
         "babel-plugin-transform-es3-member-expression-literals": "^6.22.0",
         "babel-plugin-transform-es3-property-literals": "^6.22.0",
         "babel-plugin-transform-object-assign": "^6.22.0",
+        "babel-plugin-transform-runtime": "^6.23.0",
+        "babel-preset-env": "^1.7.0",
         "dotenv-cli": "^1.4.0",
         "enzyme": "^3.6.0",
         "enzyme-adapter-react-16": "^1.5.0",
@@ -103,7 +103,7 @@
         "typedoc": "0.13.0",
         "typescript": "3.0.1",
         "webpack": "^4.20.2",
-        "webpack-cli": "^3.1.1",
+        "webpack-cli": "3.1.2",
         "webpack-dev-server": "^3.1.9"
     },
     "publishConfig": {
diff --git a/packages/json-schemas/CHANGELOG.json b/packages/json-schemas/CHANGELOG.json
index 66de84299..0f8ad747c 100644
--- a/packages/json-schemas/CHANGELOG.json
+++ b/packages/json-schemas/CHANGELOG.json
@@ -1,12 +1,26 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Add `verifyingContractAddress` to `zeroExTransactionSchema`",
+                "pr": 1576
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/json-schemas/CHANGELOG.md b/packages/json-schemas/CHANGELOG.md
index 4e562d9e8..8d6ec83bf 100644
--- a/packages/json-schemas/CHANGELOG.md
+++ b/packages/json-schemas/CHANGELOG.md
@@ -5,6 +5,15 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Add `verifyingContractAddress` to `zeroExTransactionSchema` (#1576)
+
 ## v2.1.7 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index cd515a747..1b6fdc116 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/json-schemas",
-    "version": "2.1.7",
+    "version": "3.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -39,14 +39,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/json-schemas/README.md",
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.8",
+        "@0x/typescript-typings": "^4.0.0",
         "@types/node": "*",
         "jsonschema": "^1.2.0",
         "lodash.values": "^4.3.0"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
-        "@0x/utils": "^3.0.1",
+        "@0x/tslint-config": "^3.0.0",
+        "@0x/utils": "^4.0.2",
         "@types/lodash.foreach": "^4.5.3",
         "@types/lodash.values": "^4.3.3",
         "@types/mocha": "^2.2.42",
diff --git a/packages/json-schemas/schemas/zero_ex_transaction_schema.json b/packages/json-schemas/schemas/zero_ex_transaction_schema.json
index 0c714f14d..ffdf1f229 100644
--- a/packages/json-schemas/schemas/zero_ex_transaction_schema.json
+++ b/packages/json-schemas/schemas/zero_ex_transaction_schema.json
@@ -1,10 +1,11 @@
 {
     "id": "/zeroExTransactionSchema",
     "properties": {
+        "verifyingContractAddress": { "$ref": "/addressSchema" },
         "data": { "$ref": "/hexSchema" },
         "signerAddress": { "$ref": "/addressSchema" },
         "salt": { "$ref": "/wholeNumberSchema" }
     },
-    "required": ["data", "salt", "signerAddress"],
+    "required": ["verifyingContractAddress", "data", "salt", "signerAddress"],
     "type": "object"
 }
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index 3b082f075..24b387355 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/metacoin",
-    "version": "0.0.36",
+    "version": "0.0.38",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,28 +29,28 @@
     "author": "",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/abi-gen": "^1.0.22",
-        "@0x/abi-gen-templates": "^1.0.2",
-        "@0x/base-contract": "^3.0.13",
-        "@0x/sol-coverage": "^1.0.3",
-        "@0x/sol-profiler": "^1.0.3",
-        "@0x/sol-trace": "^1.0.3",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/tslint-config": "^2.0.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "@types/mocha": "^5.2.2",
+        "@0x/abi-gen": "^2.0.1",
+        "@0x/abi-gen-templates": "^2.0.0",
+        "@0x/base-contract": "^4.0.1",
+        "@0x/sol-coverage": "^2.0.1",
+        "@0x/sol-profiler": "^2.0.2",
+        "@0x/sol-trace": "^2.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/tslint-config": "^3.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
+        "@types/mocha": "^2.2.42",
         "copyfiles": "^2.0.0",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "run-s": "^0.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/sol-compiler": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/sol-compiler": "^3.0.1",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
diff --git a/packages/migrations/CHANGELOG.json b/packages/migrations/CHANGELOG.json
index ffda41e10..167279609 100644
--- a/packages/migrations/CHANGELOG.json
+++ b/packages/migrations/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
@@ -18,7 +36,8 @@
                 "note": "Convert `from` to lower case when passed in via cli",
                 "pr": 1533
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "2.4.0",
diff --git a/packages/migrations/CHANGELOG.md b/packages/migrations/CHANGELOG.md
index 6c9a84018..f759e4a91 100644
--- a/packages/migrations/CHANGELOG.md
+++ b/packages/migrations/CHANGELOG.md
@@ -5,6 +5,21 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Removed `owner` in Migrations (#1533)
+    * `txDefaults` parameter now requires the `from` field (#1533)
+    * Convert `from` to lower case when passed in via cli (#1533)
+
 ## v2.4.0 - _January 15, 2019_
 
     * Added migrations for `MultiAssetProxy` contract (#1503)
diff --git a/packages/migrations/package.json b/packages/migrations/package.json
index 3ca4e8d6b..857136158 100644
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/migrations",
-    "version": "2.4.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,10 +35,10 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/tslint-config": "^2.0.2",
-        "@0x/types": "^1.5.2",
-        "@types/yargs": "^10.0.0",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/tslint-config": "^3.0.0",
+        "@0x/types": "^2.0.1",
+        "@types/yargs": "^11.0.0",
         "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -48,20 +48,20 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/base-contract": "^3.0.13",
-        "@0x/contract-addresses": "^2.2.0",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/base-contract": "^4.0.1",
+        "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/sol-compiler": "^2.0.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/sol-compiler": "^3.0.1",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@ledgerhq/hw-app-eth": "^4.3.0",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "optionalDependencies": {
         "@ledgerhq/hw-transport-node-hid": "^4.3.0"
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index 6904a793b..24dca0004 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/monorepo-scripts",
-    "version": "1.0.19",
+    "version": "1.0.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -32,13 +32,13 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/monorepo-scripts/README.md",
     "devDependencies": {
-        "@types/glob": "^5.0.33",
+        "@types/glob": "5.0.35",
         "@types/mkdirp": "^0.5.2",
         "@types/node": "*",
         "@types/opn": "^5.1.0",
         "@types/rimraf": "^2.0.2",
         "@types/semver": "5.5.0",
-        "@types/yargs": "^10.0.0",
+        "@types/yargs": "^11.0.0",
         "depcheck": "^0.6.9",
         "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
@@ -47,8 +47,8 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/utils": "^3.0.1",
-        "@0x/types": "^1.5.2",
+        "@0x/types": "^2.0.1",
+        "@0x/utils": "^4.0.2",
         "@lerna/batch-packages": "^3.0.0-beta.18",
         "@types/depcheck": "^0.6.0",
         "async-child-process": "^1.1.1",
@@ -56,7 +56,7 @@
         "es6-promisify": "^5.0.0",
         "glob": "^7.1.2",
         "isomorphic-fetch": "2.2.1",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "mkdirp": "^0.5.1",
         "moment": "2.21.0",
         "opn": "^5.3.0",
diff --git a/packages/monorepo-scripts/src/deps_versions.ts b/packages/monorepo-scripts/src/deps_versions.ts
index d15bb6b4d..fb57a26ef 100644
--- a/packages/monorepo-scripts/src/deps_versions.ts
+++ b/packages/monorepo-scripts/src/deps_versions.ts
@@ -1,9 +1,9 @@
 #!/usr/bin/env node
 
-import { PackageJSON } from '@0x/types';
+import { PackageJSON, PackageJSONConfig } from '@0x/types';
 import chalk from 'chalk';
 import { sync as globSync } from 'glob';
-import * as _ from 'lodash';
+import * as path from 'path';
 
 import { utils } from './utils/utils';
 
@@ -17,11 +17,35 @@ interface VersionsByDependency {
     [depName: string]: Versions;
 }
 
-const PACKAGE_JSON_GLOB = '../*/package.json';
+interface ParsedDependencies {
+    ignored: VersionsByDependency;
+    included: VersionsByDependency;
+}
+
+const PACKAGE_JSON_GLOB = '../../*/package.json';
+
+const config = utils.readJSONFile<PackageJSON>(path.join(__dirname, '../../../package.json'))
+    .config as PackageJSONConfig;
+const dependenciesWithIgnoredVersions: string[] = (config.ignoreDependencyVersions as string).split(' ');
+const packagesWithIgnoredVersions: string[] = (config.ignoreDependencyVersionsForPackage as string).split(' ');
+
+if (require.main === module) {
+    const dependencies = parseDependencies();
+    const ignoredMultiples = getDependenciesWithMultipleVersions(dependencies.ignored);
+    const multiples = getDependenciesWithMultipleVersions(dependencies.included);
+    printVersionsByDependency(multiples);
+    utils.log(`├── ${chalk.bold('IGNORED')}`);
+    printVersionsByDependency(ignoredMultiples);
+    if (Object.keys(multiples).length !== 0) {
+        utils.log(
+            `Some dependencies have multiple versions. Please fix by trying to find compatible versions. As a last resort, you can add space-separated exceptions to root package.json config.ignoreDependencyVersions`,
+        );
+        process.exit(1);
+    }
+}
 
-// tslint:disable:no-unused-variable
-function getDependencies(path: string): Dependencies {
-    const packageJSON = utils.readJSONFile<PackageJSON>(path);
+function getDependencies(_path: string): Dependencies {
+    const packageJSON = utils.readJSONFile<PackageJSON>(_path);
     const dependencies = {
         ...packageJSON.dependencies,
         ...packageJSON.devDependencies,
@@ -29,27 +53,49 @@ function getDependencies(path: string): Dependencies {
     return dependencies;
 }
 
-const files = globSync(PACKAGE_JSON_GLOB);
-const versionsByDependency: VersionsByDependency = {};
-files.map(path => {
-    const [_1, packageName, _2] = path.split('/');
-    const dependencies = getDependencies(path);
-    _.map(dependencies, (version: string, depName: string) => {
-        if (_.isUndefined(versionsByDependency[depName])) {
-            versionsByDependency[depName] = {};
-        }
-        versionsByDependency[depName][packageName] = version;
+function parseDependencies(): ParsedDependencies {
+    const files = globSync(path.join(__dirname, PACKAGE_JSON_GLOB));
+    const parsedDependencies: ParsedDependencies = {
+        ignored: {},
+        included: {},
+    };
+    files.map(_path => {
+        const pathParts = _path.split('/');
+        const packageName = pathParts[pathParts.length - 2];
+        const packageCategory = packagesWithIgnoredVersions.includes(packageName) ? 'ignored' : 'included';
+        const dependencies = getDependencies(_path);
+        Object.keys(dependencies).forEach((depName: string) => {
+            const category = dependenciesWithIgnoredVersions.includes(depName) ? 'ignored' : packageCategory;
+            if (parsedDependencies[category][depName] === undefined) {
+                parsedDependencies[category][depName] = {};
+            }
+            const version = dependencies[depName];
+            parsedDependencies[category][depName][packageName] = version;
+        });
     });
-});
+    return parsedDependencies;
+}
+
+function getDependenciesWithMultipleVersions(versionsByDependency: VersionsByDependency): VersionsByDependency {
+    return Object.keys(versionsByDependency)
+        .filter((depName: string) => hasMultipleVersions(versionsByDependency[depName]))
+        .reduce<VersionsByDependency>((obj, depName: string) => {
+            obj[depName] = versionsByDependency[depName];
+            return obj;
+        }, {});
+}
 
-_.map(versionsByDependency, (versions: Versions, depName: string) => {
-    if (_.uniq(_.values(versions)).length === 1) {
-        delete versionsByDependency[depName];
-    } else {
+function printVersionsByDependency(versionsByDependency: VersionsByDependency): void {
+    Object.keys(versionsByDependency).forEach((depName: string) => {
+        const versions: Versions = versionsByDependency[depName];
         utils.log(chalk.bold(depName));
-        _.map(versions, (version: string, packageName: string) => {
-            utils.log(`├── ${packageName} -> ${version}`);
+        Object.keys(versions).forEach((packageName: string) => {
+            utils.log(`├── ${packageName} -> ${versions[packageName]}`);
         });
-    }
-});
-// tslint:disable:no-unused-variable
+    });
+}
+
+function hasMultipleVersions(versions: Versions): boolean {
+    const uniques = new Set(Object.values(versions));
+    return uniques.size > 1;
+}
diff --git a/packages/monorepo-scripts/src/publish.ts b/packages/monorepo-scripts/src/publish.ts
index ddb2811f2..b9179678e 100644
--- a/packages/monorepo-scripts/src/publish.ts
+++ b/packages/monorepo-scripts/src/publish.ts
@@ -47,7 +47,7 @@ async function confirmAsync(message: string): Promise<void> {
         await confirmAsync(
             'THIS IS NOT A TEST PUBLISH! You are about to publish one or more packages to npm. Are you sure you want to continue? (y/n)',
         );
-        await confirmDocPagesRenderAsync(packagesWithDocs);
+        // await confirmDocPagesRenderAsync(packagesWithDocs);
     }
 
     // Update CHANGELOGs
diff --git a/packages/order-utils/CHANGELOG.json b/packages/order-utils/CHANGELOG.json
index 08d88da5b..d58a8a4c2 100644
--- a/packages/order-utils/CHANGELOG.json
+++ b/packages/order-utils/CHANGELOG.json
@@ -1,12 +1,42 @@
 [
     {
+        "version": "6.0.0",
+        "changes": {
+            "note": "Stop exporting the EIP712 schemas"
+        },
+        "timestamp": 1549504360
+    },
+    {
+        "version": "5.0.0",
+        "changes": [
+            {
+                "note": "Add `transactionHashUtils`",
+                "pr": 1576
+            },
+            {
+                "note": "Refactor `eip712Utils` to allow custom domain params",
+                "pr": 1576
+            },
+            {
+                "note": "Export constant EIP712 params",
+                "pr": 1576
+            }
+        ],
+        "timestamp": 1549452781
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Fix preSigned `isSignatureValidAsync` check",
+                "pr": 1580
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/order-utils/CHANGELOG.md b/packages/order-utils/CHANGELOG.md
index c82458f2e..f5e20a8d8 100644
--- a/packages/order-utils/CHANGELOG.md
+++ b/packages/order-utils/CHANGELOG.md
@@ -5,6 +5,21 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.0.0 - _February 7, 2019_
+
+    * undefined
+
+## v5.0.0 - _February 6, 2019_
+
+    * Add `transactionHashUtils` (#1576)
+    * Refactor `eip712Utils` to allow custom domain params (#1576)
+    * Export constant EIP712 params (#1576)
+
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Fix preSigned `isSignatureValidAsync` check (#1580)
+
 ## v3.1.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index 7a4d4aa84..90fdfeed3 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-utils",
-    "version": "3.1.2",
+    "version": "6.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,8 +35,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/order-utils/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
@@ -53,22 +53,23 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/assert": "^1.0.23",
-        "@0x/base-contract": "^3.0.13",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/assert": "^2.0.1",
+        "@0x/base-contract": "^4.0.1",
+        "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/node": "*",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/order-utils/src/constants.ts b/packages/order-utils/src/constants.ts
index a9a687719..3c93575b3 100644
--- a/packages/order-utils/src/constants.ts
+++ b/packages/order-utils/src/constants.ts
@@ -68,9 +68,9 @@ export const constants = {
     SELECTOR_CHAR_LENGTH_WITH_PREFIX: 10,
     INFINITE_TIMESTAMP_SEC: new BigNumber(2524604400), // Close to infinite
     ZERO_AMOUNT: new BigNumber(0),
-    EIP712_DOMAIN_NAME: '0x Protocol',
-    EIP712_DOMAIN_VERSION: '2',
-    EIP712_DOMAIN_SCHEMA: {
+    EXCHANGE_DOMAIN_NAME: '0x Protocol',
+    EXCHANGE_DOMAIN_VERSION: '2',
+    DEFAULT_DOMAIN_SCHEMA: {
         name: 'EIP712Domain',
         parameters: [
             { name: 'name', type: 'string' },
@@ -78,7 +78,7 @@ export const constants = {
             { name: 'verifyingContract', type: 'address' },
         ],
     },
-    EIP712_ORDER_SCHEMA: {
+    EXCHANGE_ORDER_SCHEMA: {
         name: 'Order',
         parameters: [
             { name: 'makerAddress', type: 'address' },
@@ -95,7 +95,7 @@ export const constants = {
             { name: 'takerAssetData', type: 'bytes' },
         ],
     },
-    EIP712_ZEROEX_TRANSACTION_SCHEMA: {
+    EXCHANGE_ZEROEX_TRANSACTION_SCHEMA: {
         name: 'ZeroExTransaction',
         parameters: [
             { name: 'salt', type: 'uint256' },
diff --git a/packages/order-utils/src/eip712_utils.ts b/packages/order-utils/src/eip712_utils.ts
index 385fda989..685fdc8c8 100644
--- a/packages/order-utils/src/eip712_utils.ts
+++ b/packages/order-utils/src/eip712_utils.ts
@@ -1,6 +1,13 @@
 import { assert } from '@0x/assert';
 import { schemas } from '@0x/json-schemas';
-import { EIP712Object, EIP712TypedData, EIP712Types, Order, ZeroExTransaction } from '@0x/types';
+import {
+    EIP712DomainWithDefaultSchema,
+    EIP712Object,
+    EIP712TypedData,
+    EIP712Types,
+    Order,
+    ZeroExTransaction,
+} from '@0x/types';
 import * as _ from 'lodash';
 
 import { constants } from './constants';
@@ -11,26 +18,26 @@ export const eip712Utils = {
      * @param   primaryType The primary type found in message
      * @param   types The additional types for the data in message
      * @param   message The contents of the message
-     * @param   exchangeAddress The address of the exchange contract
+     * @param   domain Domain containing a name (optional), version (optional), and verifying contract address
      * @return  A typed data object
      */
     createTypedData: (
         primaryType: string,
         types: EIP712Types,
         message: EIP712Object,
-        exchangeAddress: string,
+        domain: EIP712DomainWithDefaultSchema,
     ): EIP712TypedData => {
-        assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+        assert.isETHAddressHex('verifyingContractAddress', domain.verifyingContractAddress);
         assert.isString('primaryType', primaryType);
         const typedData = {
             types: {
-                EIP712Domain: constants.EIP712_DOMAIN_SCHEMA.parameters,
+                EIP712Domain: constants.DEFAULT_DOMAIN_SCHEMA.parameters,
                 ...types,
             },
             domain: {
-                name: constants.EIP712_DOMAIN_NAME,
-                version: constants.EIP712_DOMAIN_VERSION,
-                verifyingContract: exchangeAddress,
+                name: _.isUndefined(domain.name) ? constants.EXCHANGE_DOMAIN_NAME : domain.name,
+                version: _.isUndefined(domain.version) ? constants.EXCHANGE_DOMAIN_VERSION : domain.version,
+                verifyingContract: domain.verifyingContractAddress,
             },
             message,
             primaryType,
@@ -48,11 +55,14 @@ export const eip712Utils = {
         const normalizedOrder = _.mapValues(order, value => {
             return !_.isString(value) ? value.toString() : value;
         });
+        const domain = {
+            verifyingContractAddress: order.exchangeAddress,
+        };
         const typedData = eip712Utils.createTypedData(
-            constants.EIP712_ORDER_SCHEMA.name,
-            { Order: constants.EIP712_ORDER_SCHEMA.parameters },
+            constants.EXCHANGE_ORDER_SCHEMA.name,
+            { Order: constants.EXCHANGE_ORDER_SCHEMA.parameters },
             normalizedOrder,
-            order.exchangeAddress,
+            domain,
         );
         return typedData;
     },
@@ -60,23 +70,22 @@ export const eip712Utils = {
      * Creates an ExecuteTransaction EIP712TypedData object for use with signTypedData and
      * 0x Exchange executeTransaction.
      * @param   ZeroExTransaction the 0x transaction
-     * @param   exchangeAddress The address of the exchange contract
      * @return  A typed data object
      */
-    createZeroExTransactionTypedData: (
-        zeroExTransaction: ZeroExTransaction,
-        exchangeAddress: string,
-    ): EIP712TypedData => {
-        assert.isETHAddressHex('exchangeAddress', exchangeAddress);
+    createZeroExTransactionTypedData: (zeroExTransaction: ZeroExTransaction): EIP712TypedData => {
+        assert.isETHAddressHex('verifyingContractAddress', zeroExTransaction.verifyingContractAddress);
         assert.doesConformToSchema('zeroExTransaction', zeroExTransaction, schemas.zeroExTransactionSchema);
         const normalizedTransaction = _.mapValues(zeroExTransaction, value => {
             return !_.isString(value) ? value.toString() : value;
         });
+        const domain = {
+            verifyingContractAddress: zeroExTransaction.verifyingContractAddress,
+        };
         const typedData = eip712Utils.createTypedData(
-            constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.name,
-            { ZeroExTransaction: constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.parameters },
+            constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.name,
+            { ZeroExTransaction: constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.parameters },
             normalizedTransaction,
-            exchangeAddress,
+            domain,
         );
         return typedData;
     },
diff --git a/packages/order-utils/src/index.ts b/packages/order-utils/src/index.ts
index 2150a02e4..ff37d7088 100644
--- a/packages/order-utils/src/index.ts
+++ b/packages/order-utils/src/index.ts
@@ -3,6 +3,7 @@ export { signatureUtils } from './signature_utils';
 export { generatePseudoRandomSalt } from './salt';
 export { assetDataUtils } from './asset_data_utils';
 export { marketUtils } from './market_utils';
+export { transactionHashUtils } from './transaction_hash';
 export { rateUtils } from './rate_utils';
 export { sortingUtils } from './sorting_utils';
 export { orderParsingUtils } from './parsing_utils';
@@ -50,7 +51,9 @@ export {
     EIP712Types,
     EIP712Object,
     EIP712ObjectValue,
+    EIP712DomainWithDefaultSchema,
     ZeroExTransaction,
+    SignedZeroExTransaction,
 } from '@0x/types';
 export {
     OrderError,
diff --git a/packages/order-utils/src/order_hash.ts b/packages/order-utils/src/order_hash.ts
index c8e9be71e..ce7e6d85f 100644
--- a/packages/order-utils/src/order_hash.ts
+++ b/packages/order-utils/src/order_hash.ts
@@ -4,6 +4,7 @@ import { signTypedDataUtils } from '@0x/utils';
 import * as _ from 'lodash';
 
 import { assert } from './assert';
+import { constants } from './constants';
 import { eip712Utils } from './eip712_utils';
 
 const INVALID_TAKER_FORMAT = 'instance.takerAddress is not of a type(s) string';
@@ -34,8 +35,9 @@ export const orderHashUtils = {
             assert.doesConformToSchema('order', order, schemas.orderSchema, [schemas.hexSchema]);
         } catch (error) {
             if (_.includes(error.message, INVALID_TAKER_FORMAT)) {
-                const errMsg =
-                    'Order taker must be of type string. If you want anyone to be able to fill an order - pass ZeroEx.NULL_ADDRESS';
+                const errMsg = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                    constants.NULL_ADDRESS
+                }`;
                 throw new Error(errMsg);
             }
             throw error;
@@ -51,6 +53,17 @@ export const orderHashUtils = {
      * @return  A Buffer containing the resulting orderHash from hashing the supplied order
      */
     getOrderHashBuffer(order: SignedOrder | Order): Buffer {
+        try {
+            assert.doesConformToSchema('order', order, schemas.orderSchema, [schemas.hexSchema]);
+        } catch (error) {
+            if (_.includes(error.message, INVALID_TAKER_FORMAT)) {
+                const errMsg = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                    constants.NULL_ADDRESS
+                }`;
+                throw new Error(errMsg);
+            }
+            throw error;
+        }
         const typedData = eip712Utils.createOrderTypedData(order);
         const orderHashBuff = signTypedDataUtils.generateTypedDataHash(typedData);
         return orderHashBuff;
diff --git a/packages/order-utils/src/signature_utils.ts b/packages/order-utils/src/signature_utils.ts
index 131144d48..efcc146bf 100644
--- a/packages/order-utils/src/signature_utils.ts
+++ b/packages/order-utils/src/signature_utils.ts
@@ -1,4 +1,5 @@
 import { ExchangeContract, IValidatorContract, IWalletContract } from '@0x/abi-gen-wrappers';
+import { getContractAddressesForNetworkOrThrow } from '@0x/contract-addresses';
 import * as artifacts from '@0x/contract-artifacts';
 import { schemas } from '@0x/json-schemas';
 import { ECSignature, Order, SignatureType, SignedOrder, ValidatorSignature } from '@0x/types';
@@ -92,7 +93,14 @@ export const signatureUtils = {
         assert.isWeb3Provider('provider', provider);
         assert.isHexString('data', data);
         assert.isETHAddressHex('signerAddress', signerAddress);
-        const exchangeContract = new ExchangeContract(artifacts.Exchange.compilerOutput.abi, signerAddress, provider);
+        const web3Wrapper = new Web3Wrapper(provider);
+        const networkId = await web3Wrapper.getNetworkIdAsync();
+        const addresses = getContractAddressesForNetworkOrThrow(networkId);
+        const exchangeContract = new ExchangeContract(
+            artifacts.Exchange.compilerOutput.abi,
+            addresses.exchange,
+            provider,
+        );
         const isValid = await exchangeContract.preSigned.callAsync(data, signerAddress);
         return isValid;
     },
diff --git a/packages/order-utils/src/transaction_hash.ts b/packages/order-utils/src/transaction_hash.ts
new file mode 100644
index 000000000..2b2345af7
--- /dev/null
+++ b/packages/order-utils/src/transaction_hash.ts
@@ -0,0 +1,46 @@
+import { schemas, SchemaValidator } from '@0x/json-schemas';
+import { SignedZeroExTransaction, ZeroExTransaction } from '@0x/types';
+import { signTypedDataUtils } from '@0x/utils';
+import * as _ from 'lodash';
+
+import { assert } from './assert';
+import { eip712Utils } from './eip712_utils';
+
+export const transactionHashUtils = {
+    /**
+     * Checks if the supplied hex encoded 0x transaction hash is valid.
+     * Note: Valid means it has the expected format, not that a transaction with the transactionHash exists.
+     * Use this method when processing transactionHashes submitted as user input.
+     * @param   transactionHash    Hex encoded transactionHash.
+     * @return  Whether the supplied transactionHash has the expected format.
+     */
+    isValidTransactionHash(transactionHash: string): boolean {
+        // Since this method can be called to check if any arbitrary string conforms to an transactionHash's
+        // format, we only assert that we were indeed passed a string.
+        assert.isString('transactionHash', transactionHash);
+        const schemaValidator = new SchemaValidator();
+        const isValid = schemaValidator.validate(transactionHash, schemas.orderHashSchema).valid;
+        return isValid;
+    },
+    /**
+     * Computes the transactionHash for a supplied 0x transaction.
+     * @param   transaction   An object that conforms to the ZeroExTransaction or SignedZeroExTransaction interface definitions.
+     * @return  Hex encoded string transactionHash from hashing the supplied order.
+     */
+    getTransactionHashHex(transaction: ZeroExTransaction | SignedZeroExTransaction): string {
+        assert.doesConformToSchema('transaction', transaction, schemas.zeroExTransactionSchema, [schemas.hexSchema]);
+        const transactionHashBuff = transactionHashUtils.getTransactionHashBuffer(transaction);
+        const transactionHashHex = `0x${transactionHashBuff.toString('hex')}`;
+        return transactionHashHex;
+    },
+    /**
+     * Computes the transactionHash for a supplied 0x transaction.
+     * @param   transaction   An object that conforms to the ZeroExTransaction or SignedZeroExTransaction interface definitions.
+     * @return  A Buffer containing the resulting transactionHash from hashing the supplied 0x transaction.
+     */
+    getTransactionHashBuffer(transaction: ZeroExTransaction | SignedZeroExTransaction): Buffer {
+        const typedData = eip712Utils.createZeroExTransactionTypedData(transaction);
+        const transactionHashBuff = signTypedDataUtils.generateTypedDataHash(typedData);
+        return transactionHashBuff;
+    },
+};
diff --git a/packages/order-utils/test/eip712_utils_test.ts b/packages/order-utils/test/eip712_utils_test.ts
index a54e49958..c97bed144 100644
--- a/packages/order-utils/test/eip712_utils_test.ts
+++ b/packages/order-utils/test/eip712_utils_test.ts
@@ -12,33 +12,55 @@ const expect = chai.expect;
 
 describe('EIP712 Utils', () => {
     describe('createTypedData', () => {
-        it('adds in the EIP712DomainSeparator', () => {
+        it('adds in the EIP712DomainSeparator with default values', () => {
             const primaryType = 'Test';
             const typedData = eip712Utils.createTypedData(
                 primaryType,
                 { Test: [{ name: 'testValue', type: 'uint256' }] },
                 { testValue: '1' },
-                constants.NULL_ADDRESS,
+                { verifyingContractAddress: constants.NULL_ADDRESS },
             );
             expect(typedData.domain).to.not.be.undefined();
             expect(typedData.types.EIP712Domain).to.not.be.undefined();
             const domainObject = typedData.domain;
-            expect(domainObject.name).to.eq(constants.EIP712_DOMAIN_NAME);
+            expect(domainObject.name).to.eq(constants.EXCHANGE_DOMAIN_NAME);
+            expect(domainObject.version).to.eq(constants.EXCHANGE_DOMAIN_VERSION);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
+            expect(typedData.primaryType).to.eq(primaryType);
+        });
+        it('adds in the EIP712DomainSeparator without default values', () => {
+            const primaryType = 'Test';
+            const domainName = 'testDomain';
+            const domainVersion = 'testVersion';
+            const typedData = eip712Utils.createTypedData(
+                primaryType,
+                { Test: [{ name: 'testValue', type: 'uint256' }] },
+                { testValue: '1' },
+                { name: domainName, version: domainVersion, verifyingContractAddress: constants.NULL_ADDRESS },
+            );
+            expect(typedData.domain).to.not.be.undefined();
+            expect(typedData.types.EIP712Domain).to.not.be.undefined();
+            const domainObject = typedData.domain;
+            expect(domainObject.name).to.eq(domainName);
+            expect(domainObject.version).to.eq(domainVersion);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
             expect(typedData.primaryType).to.eq(primaryType);
         });
     });
-    describe('createTypedData', () => {
+    describe('createZeroExTransactionTypedData', () => {
         it('adds in the EIP712DomainSeparator', () => {
-            const typedData = eip712Utils.createZeroExTransactionTypedData(
-                {
-                    salt: new BigNumber('0'),
-                    data: constants.NULL_BYTES,
-                    signerAddress: constants.NULL_ADDRESS,
-                },
-                constants.NULL_ADDRESS,
-            );
-            expect(typedData.primaryType).to.eq(constants.EIP712_ZEROEX_TRANSACTION_SCHEMA.name);
+            const typedData = eip712Utils.createZeroExTransactionTypedData({
+                salt: new BigNumber('0'),
+                data: constants.NULL_BYTES,
+                signerAddress: constants.NULL_ADDRESS,
+                verifyingContractAddress: constants.NULL_ADDRESS,
+            });
+            expect(typedData.primaryType).to.eq(constants.EXCHANGE_ZEROEX_TRANSACTION_SCHEMA.name);
             expect(typedData.types.EIP712Domain).to.not.be.undefined();
+            const domainObject = typedData.domain;
+            expect(domainObject.name).to.eq(constants.EXCHANGE_DOMAIN_NAME);
+            expect(domainObject.version).to.eq(constants.EXCHANGE_DOMAIN_VERSION);
+            expect(domainObject.verifyingContract).to.eq(constants.NULL_ADDRESS);
         });
     });
 });
diff --git a/packages/order-utils/test/order_hash_test.ts b/packages/order-utils/test/order_hash_test.ts
index 30fb15a37..514fc2709 100644
--- a/packages/order-utils/test/order_hash_test.ts
+++ b/packages/order-utils/test/order_hash_test.ts
@@ -54,8 +54,9 @@ describe('Order hashing', () => {
                 ...order,
                 takerAddress: (null as any) as string,
             };
-            const expectedErrorMessage =
-                'Order taker must be of type string. If you want anyone to be able to fill an order - pass ZeroEx.NULL_ADDRESS';
+            const expectedErrorMessage = `Order taker must be of type string. If you want anyone to be able to fill an order - pass ${
+                constants.NULL_ADDRESS
+            }`;
             expect(() => orderHashUtils.getOrderHashHex(orderWithInvalidtakerFormat)).to.throw(expectedErrorMessage);
         });
     });
diff --git a/packages/order-utils/test/signature_utils_test.ts b/packages/order-utils/test/signature_utils_test.ts
index 937382056..44aa729b3 100644
--- a/packages/order-utils/test/signature_utils_test.ts
+++ b/packages/order-utils/test/signature_utils_test.ts
@@ -99,6 +99,17 @@ describe('Signature utils', () => {
             );
             expect(isValidSignatureLocal).to.be.true();
         });
+
+        it('should return false if entry not found in `preSigned` mapping', async () => {
+            const preSignedSignature = '0x06';
+            const isValidPreSignature = await signatureUtils.isValidSignatureAsync(
+                provider,
+                dataHex,
+                preSignedSignature,
+                address,
+            );
+            expect(isValidPreSignature).to.be.false();
+        });
     });
     describe('#isValidECSignature', () => {
         const signature = {
diff --git a/packages/order-utils/test/transaction_hash_test.ts b/packages/order-utils/test/transaction_hash_test.ts
new file mode 100644
index 000000000..c7ca33a64
--- /dev/null
+++ b/packages/order-utils/test/transaction_hash_test.ts
@@ -0,0 +1,56 @@
+import { ZeroExTransaction } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+import * as chai from 'chai';
+import 'mocha';
+
+import { transactionHashUtils } from '../src';
+
+import { constants } from '../src/constants';
+
+import { chaiSetup } from './utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+describe('0x transaction hashing', () => {
+    describe('#getTransactionHashHex', () => {
+        const expectedTransactionHash = '0x82c9bb2dcac4f868ec7a15c20ff6175cfc384c20ae6a872aa0342a840f108c2b';
+        const fakeVerifyingContractAddress = '0x5e72914535f202659083db3a02c984188fa26e9f';
+        const transaction: ZeroExTransaction = {
+            verifyingContractAddress: fakeVerifyingContractAddress,
+            signerAddress: constants.NULL_ADDRESS,
+            salt: new BigNumber(0),
+            data: constants.NULL_BYTES,
+        };
+        it('calculates the transaction hash', async () => {
+            const transactionHash = transactionHashUtils.getTransactionHashHex(transaction);
+            expect(transactionHash).to.be.equal(expectedTransactionHash);
+        });
+        it('calculates the transaction hash if amounts are strings', async () => {
+            // It's common for developers using javascript to provide the amounts
+            // as strings. Since we eventually toString() the BigNumber
+            // before encoding we should result in the same orderHash in this scenario
+            // tslint:disable-next-line:no-unnecessary-type-assertion
+            const transactionHash = transactionHashUtils.getTransactionHashHex({
+                ...transaction,
+                salt: '0',
+            } as any);
+            expect(transactionHash).to.be.equal(expectedTransactionHash);
+        });
+    });
+    describe('#isValidTransactionHash', () => {
+        it('returns false if the value is not a hex string', () => {
+            const isValid = transactionHashUtils.isValidTransactionHash('not a hex');
+            expect(isValid).to.be.false();
+        });
+        it('returns false if the length is wrong', () => {
+            const isValid = transactionHashUtils.isValidTransactionHash('0xdeadbeef');
+            expect(isValid).to.be.false();
+        });
+        it('returns true if order hash is correct', () => {
+            const orderHashLength = 65;
+            const isValid = transactionHashUtils.isValidTransactionHash(`0x${Array(orderHashLength).join('0')}`);
+            expect(isValid).to.be.true();
+        });
+    });
+});
diff --git a/packages/order-watcher/CHANGELOG.json b/packages/order-watcher/CHANGELOG.json
index 585bb48e6..c7bffa5b7 100644
--- a/packages/order-watcher/CHANGELOG.json
+++ b/packages/order-watcher/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547747677,
diff --git a/packages/order-watcher/CHANGELOG.md b/packages/order-watcher/CHANGELOG.md
index df065866c..bb908bfcf 100644
--- a/packages/order-watcher/CHANGELOG.md
+++ b/packages/order-watcher/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v2.4.3 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/order-watcher/package.json b/packages/order-watcher/package.json
index 895c64813..3c4cc06ba 100644
--- a/packages/order-watcher/package.json
+++ b/packages/order-watcher/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-watcher",
-    "version": "2.4.3",
+    "version": "3.0.2",
     "description": "An order watcher daemon that watches for order validity",
     "keywords": [
         "0x",
@@ -38,10 +38,10 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/migrations": "^2.4.0",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/migrations": "^3.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "@types/bintrees": "^1.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -63,24 +63,24 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.2.0",
-        "@0x/assert": "^1.0.23",
-        "@0x/base-contract": "^3.0.13",
-        "@0x/contract-addresses": "^2.2.0",
+        "@0x/abi-gen-wrappers": "^3.0.1",
+        "@0x/assert": "^2.0.1",
+        "@0x/base-contract": "^4.0.1",
+        "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contract-wrappers": "^5.0.1",
-        "@0x/fill-scenarios": "^1.1.2",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/contract-wrappers": "^7.0.1",
+        "@0x/fill-scenarios": "^2.0.2",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "bintrees": "^1.0.2",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-blockstream": "6.0.0",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "websocket": "^1.0.25"
     },
     "publishConfig": {
diff --git a/packages/pipeline/README.md b/packages/pipeline/README.md
index 4fc8e0ff9..23113fd9b 100644
--- a/packages/pipeline/README.md
+++ b/packages/pipeline/README.md
@@ -34,8 +34,10 @@ yarn lint
 
 ### Migrations
 
-Create a new migration: `yarn migrate:create --name MigrationNameInCamelCase`
+Create a new migration: `yarn migrate:create --name MigrationNameInCamelCase`.
+
 Run migrations: `yarn migrate:run`
+
 Revert the most recent migration (CAUTION: may result in data loss!): `yarn migrate:revert`
 
 ## Testing
diff --git a/packages/pipeline/package.json b/packages/pipeline/package.json
index 908734687..a1500cc74 100644
--- a/packages/pipeline/package.json
+++ b/packages/pipeline/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/pipeline",
-    "version": "1.0.5",
+    "version": "1.0.8",
     "private": true,
     "description": "Data pipeline for offline analysis",
     "scripts": {
@@ -27,35 +27,35 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/axios": "^0.14.0",
         "@types/ramda": "^0.25.38",
-        "chai": "^4.1.2",
-        "chai-as-promised": "^7.1.1",
+        "chai": "^4.0.1",
+        "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "mocha": "^5.2.0",
+        "mocha": "^4.1.0",
         "tslint": "5.11.0",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/connect": "^3.0.13",
-        "@0x/contract-addresses": "^2.2.0",
+        "@0x/connect": "^4.0.2",
+        "@0x/contract-addresses": "^2.2.1",
         "@0x/contract-artifacts": "^1.3.0",
-        "@0x/contract-wrappers": "^3.0.0",
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/contract-wrappers": "^7.0.1",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/dockerode": "^2.5.9",
         "@types/p-limit": "^2.0.0",
         "async-parallel": "^1.2.3",
         "axios": "^0.18.0",
         "bottleneck": "^2.13.2",
         "dockerode": "^2.5.7",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "pg": "^7.5.0",
         "prettier": "^1.15.3",
         "ramda": "^0.25.0",
diff --git a/packages/react-docs/CHANGELOG.json b/packages/react-docs/CHANGELOG.json
index 8b418fc11..9fccd6257 100644
--- a/packages/react-docs/CHANGELOG.json
+++ b/packages/react-docs/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/react-docs/CHANGELOG.md b/packages/react-docs/CHANGELOG.md
index 5ec82b5be..a95f5371b 100644
--- a/packages/react-docs/CHANGELOG.md
+++ b/packages/react-docs/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.25 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index f8f2b6276..ed32f4289 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-docs",
-    "version": "1.0.25",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,19 +24,19 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "@types/compare-versions": "^3.0.0",
         "@types/styled-components": "4.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
-        "tslint": "^5.9.1",
+        "tslint": "5.11.0",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/react-shared": "^1.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/utils": "^3.0.1",
+        "@0x/react-shared": "^2.0.2",
+        "@0x/types": "^2.0.1",
+        "@0x/utils": "^4.0.2",
         "@types/lodash": "4.14.104",
         "@types/material-ui": "^0.20.0",
         "@types/node": "*",
@@ -45,7 +45,7 @@
         "@types/react-scroll": "1.5.3",
         "basscss": "^8.0.3",
         "compare-versions": "^3.0.1",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "material-ui": "^0.20.0",
         "react": "^16.5.2",
         "react-dom": "^16.5.2",
@@ -53,7 +53,7 @@
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
         "react-tooltip": "^3.2.7",
         "semver": "5.5.0",
-        "styled-components": "^4.0.1"
+        "styled-components": "^4.1.1"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/react-shared/CHANGELOG.json b/packages/react-shared/CHANGELOG.json
index 99a8779ac..b9a7ca3df 100644
--- a/packages/react-shared/CHANGELOG.json
+++ b/packages/react-shared/CHANGELOG.json
@@ -1,12 +1,31 @@
 [
     {
+        "timestamp": 1549504360,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/react-shared/CHANGELOG.md b/packages/react-shared/CHANGELOG.md
index e1a5df403..05bdffa14 100644
--- a/packages/react-shared/CHANGELOG.md
+++ b/packages/react-shared/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 7, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.1.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/react-shared/package.json b/packages/react-shared/package.json
index 4be4742b0..3558d8afd 100644
--- a/packages/react-shared/package.json
+++ b/packages/react-shared/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-shared",
-    "version": "1.1.2",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -25,19 +25,19 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
-        "tslint": "^5.9.1",
+        "tslint": "5.11.0",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.2",
+        "@0x/types": "^2.0.1",
         "@material-ui/core": "^3.0.1",
         "@types/is-mobile": "0.3.0",
         "@types/lodash": "4.14.104",
-        "@types/material-ui": "0.18.0",
+        "@types/material-ui": "^0.20.0",
         "@types/node": "*",
         "@types/react": "*",
         "@types/react-dom": "*",
@@ -48,15 +48,15 @@
         "basscss": "^8.0.3",
         "change-case": "^3.0.2",
         "is-mobile": "^0.2.2",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "material-ui": "^0.20.0",
         "react": "^16.5.2",
         "react-dom": "^16.5.2",
-        "react-highlight": "0xproject/react-highlight#fix/react-version",
+        "react-highlight": "0xproject/react-highlight#react-peer-deps",
         "react-markdown": "^3.2.2",
-        "react-router-dom": "^4.1.1",
+        "react-router-dom": "^4.3.1",
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
-        "styled-components": "^4.0.1",
+        "styled-components": "^4.1.1",
         "valid-url": "^1.0.9"
     },
     "publishConfig": {
diff --git a/packages/react-shared/src/components/markdown_paragraph_block.tsx b/packages/react-shared/src/components/markdown_paragraph_block.tsx
index eeaef8571..9ed44ed07 100644
--- a/packages/react-shared/src/components/markdown_paragraph_block.tsx
+++ b/packages/react-shared/src/components/markdown_paragraph_block.tsx
@@ -6,5 +6,9 @@ import { colors } from '../utils/colors';
 export interface MarkdownParagraphBlockProps {}
 
 export const MarkdownParagraphBlock: React.StatelessComponent<MarkdownParagraphBlockProps> = ({ children }) => {
-    return <span style={{ color: colors.greyTheme, lineHeight: '26px' }}>{children}</span>;
+    return (
+        <span style={{ color: colors.greyTheme, lineHeight: '26px', display: 'block', paddingBottom: 15 }}>
+            {children}
+        </span>
+    );
 };
diff --git a/packages/sol-compiler/CHANGELOG.json b/packages/sol-compiler/CHANGELOG.json
index 672939a4a..5f103342e 100644
--- a/packages/sol-compiler/CHANGELOG.json
+++ b/packages/sol-compiler/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/sol-compiler/CHANGELOG.md b/packages/sol-compiler/CHANGELOG.md
index dfcec1fa7..400c33763 100644
--- a/packages/sol-compiler/CHANGELOG.md
+++ b/packages/sol-compiler/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v2.0.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index 0b53cffd5..3ba3c20e6 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-compiler",
-    "version": "2.0.2",
+    "version": "3.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,13 +42,13 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-compiler/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/tslint-config": "^3.0.0",
         "@types/chokidar": "^1.7.5",
         "@types/mkdirp": "^0.5.2",
         "@types/pluralize": "^0.0.29",
         "@types/require-from-string": "^1.2.0",
-        "@types/semver": "^5.5.0",
+        "@types/semver": "5.5.0",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
@@ -67,19 +67,19 @@
         "zeppelin-solidity": "1.8.0"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/sol-resolver": "^1.2.3",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/assert": "^2.0.1",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/sol-resolver": "^2.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/yargs": "^11.0.0",
         "chalk": "^2.3.0",
         "chokidar": "^2.0.4",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "mkdirp": "^0.5.1",
         "pluralize": "^7.0.0",
         "require-from-string": "^2.0.1",
diff --git a/packages/sol-coverage/CHANGELOG.json b/packages/sol-coverage/CHANGELOG.json
index 550ca2feb..c5b3ae84e 100644
--- a/packages/sol-coverage/CHANGELOG.json
+++ b/packages/sol-coverage/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547747677,
diff --git a/packages/sol-coverage/CHANGELOG.md b/packages/sol-coverage/CHANGELOG.md
index 18c1719bf..0612e407e 100644
--- a/packages/sol-coverage/CHANGELOG.md
+++ b/packages/sol-coverage/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.3 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-coverage/package.json b/packages/sol-coverage/package.json
index 805e2e670..f6be925bb 100644
--- a/packages/sol-coverage/package.json
+++ b/packages/sol-coverage/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-coverage",
-    "version": "1.0.3",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,14 +29,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-coverage/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^4.0.1",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
-        "ethereum-types": "^1.1.6",
-        "lodash": "^4.17.5"
+        "@0x/sol-tracing-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/sol-doc/CHANGELOG.json b/packages/sol-doc/CHANGELOG.json
index 662915faf..d4f89a32e 100644
--- a/packages/sol-doc/CHANGELOG.json
+++ b/packages/sol-doc/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/sol-doc/CHANGELOG.md b/packages/sol-doc/CHANGELOG.md
index 1a60b5f89..d838a52ae 100644
--- a/packages/sol-doc/CHANGELOG.md
+++ b/packages/sol-doc/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.14 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-doc/package.json b/packages/sol-doc/package.json
index 179f45e81..e68e3a237 100644
--- a/packages/sol-doc/package.json
+++ b/packages/sol-doc/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-doc",
-    "version": "1.0.14",
+    "version": "2.0.1",
     "description": "Solidity documentation generator",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.js",
@@ -25,22 +25,22 @@
     "author": "F. Eugene Aumson",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/sol-compiler": "^2.0.2",
-        "@0x/types": "^1.5.2",
-        "@0x/utils": "^3.0.1",
-        "ethereum-types": "^1.1.6",
+        "@0x/sol-compiler": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/utils": "^4.0.2",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.10",
-        "yargs": "^12.0.2"
+        "lodash": "^4.17.11",
+        "yargs": "^10.0.3"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
-        "chai": "^4.1.2",
+        "@0x/tslint-config": "^3.0.0",
+        "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
         "make-promises-safe": "^1.1.0",
-        "mocha": "^5.2.0",
+        "mocha": "^4.1.0",
         "shx": "^0.2.2",
         "source-map-support": "^0.5.0",
         "tslint": "5.11.0"
diff --git a/packages/sol-profiler/CHANGELOG.json b/packages/sol-profiler/CHANGELOG.json
index fc928b516..145158ab3 100644
--- a/packages/sol-profiler/CHANGELOG.json
+++ b/packages/sol-profiler/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.1",
         "changes": [
             {
                 "note": "Fix a bug when some parts of the profiling report were missing because of the coverage ignore lines",
                 "pr": 1535
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "2.0.0",
diff --git a/packages/sol-profiler/CHANGELOG.md b/packages/sol-profiler/CHANGELOG.md
index 18c1719bf..cf0ec8ee7 100644
--- a/packages/sol-profiler/CHANGELOG.md
+++ b/packages/sol-profiler/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 5, 2019_
+
+    * Fix a bug when some parts of the profiling report were missing because of the coverage ignore lines (#1535)
+
+## v2.0.0 - _Invalid date_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.3 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-profiler/package.json b/packages/sol-profiler/package.json
index 4fe2928c7..8518c88b0 100644
--- a/packages/sol-profiler/package.json
+++ b/packages/sol-profiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-profiler",
-    "version": "1.0.3",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,14 +29,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-profiler/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^4.0.1",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
-        "ethereum-types": "^1.1.6",
-        "lodash": "^4.17.5"
+        "@0x/sol-tracing-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "ethereum-types": "^2.0.0",
+        "lodash": "^4.17.11"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
diff --git a/packages/sol-resolver/CHANGELOG.json b/packages/sol-resolver/CHANGELOG.json
index f5a005fd4..147f7ac61 100644
--- a/packages/sol-resolver/CHANGELOG.json
+++ b/packages/sol-resolver/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/sol-resolver/CHANGELOG.md b/packages/sol-resolver/CHANGELOG.md
index a48561cc3..90d7cc2b8 100644
--- a/packages/sol-resolver/CHANGELOG.md
+++ b/packages/sol-resolver/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.2.3 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-resolver/package.json b/packages/sol-resolver/package.json
index 0518cde95..1f5189537 100644
--- a/packages/sol-resolver/package.json
+++ b/packages/sol-resolver/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-resolver",
-    "version": "1.2.3",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -23,16 +23,16 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/resolver/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "lodash": "^4.17.5"
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/sol-trace/CHANGELOG.json b/packages/sol-trace/CHANGELOG.json
index b633b3d21..44ce3fcf6 100644
--- a/packages/sol-trace/CHANGELOG.json
+++ b/packages/sol-trace/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.1",
         "changes": [
             {
                 "note": "Improve error messages when unable to find matching bytecode",
                 "pr": 1558
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "2.0.0",
diff --git a/packages/sol-trace/CHANGELOG.md b/packages/sol-trace/CHANGELOG.md
index 18c1719bf..92e53f6f3 100644
--- a/packages/sol-trace/CHANGELOG.md
+++ b/packages/sol-trace/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _February 5, 2019_
+
+    * Improve error messages when unable to find matching bytecode (#1558)
+
+## v2.0.0 - _Invalid date_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.3 - _January 17, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-trace/package.json b/packages/sol-trace/package.json
index 25e81a82a..678253ce7 100644
--- a/packages/sol-trace/package.json
+++ b/packages/sol-trace/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-trace",
-    "version": "1.0.3",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,17 +29,17 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-trace/README.md",
     "dependencies": {
-        "@0x/sol-tracing-utils": "^4.0.1",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
+        "@0x/sol-tracing-utils": "^6.0.1",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
         "chalk": "^2.3.0",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "loglevel": "^1.6.1"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/loglevel": "^1.5.3",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
diff --git a/packages/sol-tracing-utils/CHANGELOG.json b/packages/sol-tracing-utils/CHANGELOG.json
index 89a5b6876..75131dddb 100644
--- a/packages/sol-tracing-utils/CHANGELOG.json
+++ b/packages/sol-tracing-utils/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "6.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "6.0.0",
         "changes": [
             {
@@ -25,8 +34,17 @@
             {
                 "note": "Improve error messages when unable to find matching bytecode",
                 "pr": 1558
+            },
+            {
+                "note": "Fix default gas limit for fake txs in `TraceCollectionSubprovider`",
+                "pr": 1583
+            },
+            {
+                "note": "Fix a big when we were not intercepting `eth_sendRawTransaction`",
+                "pr": 1584
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "version": "5.0.0",
diff --git a/packages/sol-tracing-utils/CHANGELOG.md b/packages/sol-tracing-utils/CHANGELOG.md
index 9bffb2a6d..3889e89c3 100644
--- a/packages/sol-tracing-utils/CHANGELOG.md
+++ b/packages/sol-tracing-utils/CHANGELOG.md
@@ -5,6 +5,25 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v6.0.0 - _February 5, 2019_
+
+    * `SolCompilerArtifactAdapter` now uses `SolResolver` under the hood which allows to resolve `NPM` dependencies properly (#1535)
+    * Cache the `utils.getContractDataIfExists` leading to faster execution (#1535)
+    * `SolCompilerArtifactAdapter` now doesn't return the `ContractData` for interfaces (#1535)
+    * Print resasonable error message on bytecode collision (#1535)
+    * Fix the bug in `ASTVisitor` causing the 'cannot read property `range` of `null`' error (#1557)
+    * Improve error messages when unable to find matching bytecode (#1558)
+    * Fix default gas limit for fake txs in `TraceCollectionSubprovider` (#1583)
+    * Fix a big when we were not intercepting `eth_sendRawTransaction` (#1584)
+
+## v5.0.0 - _Invalid date_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v4.0.1 - _January 17, 2019_
 
     * Fix a bug where a custom `Geth` tracer didn't return stack entries for `DELEGATECALL` (#1521)
diff --git a/packages/sol-tracing-utils/package.json b/packages/sol-tracing-utils/package.json
index 929c73b84..5e2f69c82 100644
--- a/packages/sol-tracing-utils/package.json
+++ b/packages/sol-tracing-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-tracing-utils",
-    "version": "4.0.1",
+    "version": "6.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,20 +42,21 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-tracing-utils/README.md",
     "dependencies": {
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/sol-compiler": "^2.0.2",
-        "@0x/sol-resolver": "^1.2.3",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/dev-utils": "^2.0.1",
+        "@0x/sol-compiler": "^3.0.1",
+        "@0x/sol-resolver": "^2.0.1",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@types/solidity-parser-antlr": "^0.2.0",
-        "ethereum-types": "^1.1.6",
+        "chalk": "^2.3.0",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
+        "ethers": "~4.0.4",
         "glob": "^7.1.2",
-        "chalk": "^2.3.0",
         "istanbul": "^0.4.5",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "loglevel": "^1.6.1",
         "mkdirp": "^0.5.1",
         "rimraf": "^2.6.2",
@@ -63,10 +64,10 @@
         "solidity-parser-antlr": "^0.2.12"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/istanbul": "^0.4.30",
         "@types/loglevel": "^1.5.3",
-        "@types/mkdirp": "^0.5.1",
+        "@types/mkdirp": "^0.5.2",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
         "@types/rimraf": "^2.0.2",
diff --git a/packages/sol-tracing-utils/src/trace_collection_subprovider.ts b/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
index 5118921fa..7fde1f9b8 100644
--- a/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
+++ b/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
@@ -3,6 +3,7 @@ import { Callback, ErrorCallback, NextCallback, Subprovider } from '@0x/subprovi
 import { logUtils } from '@0x/utils';
 import { CallDataRPC, marshaller, Web3Wrapper } from '@0x/web3-wrapper';
 import { JSONRPCRequestPayload, Provider, TxData } from 'ethereum-types';
+import { utils } from 'ethers';
 import * as _ from 'lodash';
 import { Lock } from 'semaphore-async-await';
 
@@ -96,6 +97,18 @@ export abstract class TraceCollectionSubprovider extends Subprovider {
                     }
                     return;
 
+                case 'eth_sendRawTransaction':
+                    if (!this._config.shouldCollectTransactionTraces) {
+                        next();
+                    } else {
+                        const txData = utils.parseTransaction(payload.params[0]);
+                        if (txData.to === null) {
+                            txData.to = constants.NEW_CONTRACT;
+                        }
+                        next(logAsyncErrors(this._onTransactionSentAsync.bind(this, txData)));
+                    }
+                    return;
+
                 case 'eth_call':
                     if (!this._config.shouldCollectCallTraces) {
                         next();
@@ -180,13 +193,13 @@ export abstract class TraceCollectionSubprovider extends Subprovider {
         cb();
     }
     private async _recordCallOrGasEstimateTraceAsync(callData: Partial<CallDataRPC>): Promise<void> {
-        // We don't want other transactions to be exeucted during snashotting period, that's why we lock the
+        // We don't want other transactions to be executed during snashotting period, that's why we lock the
         // transaction execution for all transactions except our fake ones.
         await this._lock.acquire();
         const blockchainLifecycle = new BlockchainLifecycle(this._web3Wrapper);
         await blockchainLifecycle.startAsync();
         const fakeTxData = {
-            gas: BLOCK_GAS_LIMIT.toString(16), // tslint:disable-line:custom-no-magic-numbers
+            gas: `0x${BLOCK_GAS_LIMIT.toString(16)}`, // tslint:disable-line:custom-no-magic-numbers
             isFakeTransaction: true, // This transaction (and only it) is allowed to come through when the lock is locked
             ...callData,
             from: callData.from || this._defaultFromAddress,
diff --git a/packages/sra-spec/CHANGELOG.json b/packages/sra-spec/CHANGELOG.json
index e22a3b0e4..b812f0809 100644
--- a/packages/sra-spec/CHANGELOG.json
+++ b/packages/sra-spec/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/sra-spec/CHANGELOG.md b/packages/sra-spec/CHANGELOG.md
index 5fe40ccb4..ceae08a17 100644
--- a/packages/sra-spec/CHANGELOG.md
+++ b/packages/sra-spec/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v1.0.16 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/sra-spec/package.json b/packages/sra-spec/package.json
index 9c4c0a24f..7644cbe7d 100644
--- a/packages/sra-spec/package.json
+++ b/packages/sra-spec/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sra-spec",
-    "version": "1.0.16",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,20 +35,20 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sra-spec/README.md",
     "dependencies": {
-        "@0x/json-schemas": "^2.1.7",
+        "@0x/json-schemas": "^3.0.1",
         "@loopback/openapi-v3-types": "^0.8.2"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/mocha": "^2.2.42",
-        "@types/node": "^10.5.3",
+        "@types/node": "*",
         "chai": "^4.0.1",
         "chokidar-cli": "^1.2.0",
         "copyfiles": "^2.0.0",
         "dirty-chai": "^2.0.1",
         "discharge": "^0.7.1",
-        "mocha": "^4.0.1",
-        "npm-run-all": "^4.1.3",
+        "mocha": "^4.1.0",
+        "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
         "redoc-cli": "^0.6.1",
         "shx": "^0.2.2",
diff --git a/packages/subproviders/CHANGELOG.json b/packages/subproviders/CHANGELOG.json
index ffb9740cd..ad005d2e5 100644
--- a/packages/subproviders/CHANGELOG.json
+++ b/packages/subproviders/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
@@ -10,7 +19,8 @@
                 "note": "Update ganache-core to v2.3.3",
                 "pr": 1518
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/subproviders/CHANGELOG.md b/packages/subproviders/CHANGELOG.md
index 16457ee2b..58a85b822 100644
--- a/packages/subproviders/CHANGELOG.md
+++ b/packages/subproviders/CHANGELOG.md
@@ -5,6 +5,15 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Update ganache-core to v2.3.3 (#1518)
+
 ## v2.1.11 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index b54cc11db..30728434f 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/subproviders",
-    "version": "2.1.11",
+    "version": "3.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,11 +29,11 @@
         }
     },
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/assert": "^2.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@ledgerhq/hw-app-eth": "^4.3.0",
         "@ledgerhq/hw-transport-u2f": "4.24.0",
         "@types/eth-lightwallet": "^3.0.0",
@@ -43,18 +43,18 @@
         "bip39": "^2.5.0",
         "bn.js": "^4.11.8",
         "eth-lightwallet": "^3.0.1",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-tx": "^1.3.5",
         "ethereumjs-util": "^5.1.1",
         "ganache-core": "^2.3.3",
         "hdkey": "^0.7.1",
         "json-rpc-error": "2.0.0",
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "semaphore-async-await": "^1.5.1",
         "web3-provider-engine": "14.0.6"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/bip39": "^2.4.0",
         "@types/bn.js": "^4.11.0",
         "@types/ethereumjs-tx": "^1.0.0",
diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index da7477be4..22961d215 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/testnet-faucets",
-    "version": "1.0.64",
+    "version": "1.0.67",
     "engines": {
         "node": ">=6.12"
     },
@@ -18,21 +18,21 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "0x.js": "^3.0.3",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "0x.js": "^4.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "body-parser": "^1.17.1",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-tx": "^1.3.5",
         "ethereumjs-util": "^5.1.1",
         "express": "^4.15.2",
-        "lodash": "^4.17.5",
-        "rollbar": "^0.6.5"
+        "lodash": "^4.17.11",
+        "rollbar": "^2.5.0"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/body-parser": "^1.16.1",
         "@types/express": "^4.0.35",
         "@types/lodash": "4.14.104",
diff --git a/packages/tslint-config/CHANGELOG.json b/packages/tslint-config/CHANGELOG.json
index 34ea6aa6b..884a5b46f 100644
--- a/packages/tslint-config/CHANGELOG.json
+++ b/packages/tslint-config/CHANGELOG.json
@@ -6,7 +6,8 @@
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/tslint-config/CHANGELOG.md b/packages/tslint-config/CHANGELOG.md
index 37d287c10..5719f28a6 100644
--- a/packages/tslint-config/CHANGELOG.md
+++ b/packages/tslint-config/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v2.0.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/tslint-config/package.json b/packages/tslint-config/package.json
index f90321edb..b5846a5aa 100644
--- a/packages/tslint-config/package.json
+++ b/packages/tslint-config/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/tslint-config",
-    "version": "2.0.2",
+    "version": "3.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -40,7 +40,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "lodash": "^4.17.5",
+        "lodash": "^4.17.11",
         "tslint": "5.11.0",
         "tslint-eslint-rules": "5.4.0",
         "tslint-react": "^3.2.0",
diff --git a/packages/types/CHANGELOG.json b/packages/types/CHANGELOG.json
index 7a6d205ee..cb01ccc4a 100644
--- a/packages/types/CHANGELOG.json
+++ b/packages/types/CHANGELOG.json
@@ -1,12 +1,30 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
+            },
+            {
+                "note": "Update `ZeroExTransaction` type and add `SignedZeroExTransaction` type",
+                "pr": 1576
+            },
+            {
+                "note": "Add `EIP712DomainWithDefaultSchema` type",
+                "pr": 1576
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/types/CHANGELOG.md b/packages/types/CHANGELOG.md
index ac27d9096..e43be5e55 100644
--- a/packages/types/CHANGELOG.md
+++ b/packages/types/CHANGELOG.md
@@ -5,6 +5,16 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v2.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Update `ZeroExTransaction` type and add `SignedZeroExTransaction` type (#1576)
+    * Add `EIP712DomainWithDefaultSchema` type (#1576)
+
 ## v1.5.2 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/types/package.json b/packages/types/package.json
index 440f05423..4e196b292 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/types",
-    "version": "1.5.2",
+    "version": "2.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -23,7 +23,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/types/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
@@ -32,7 +32,7 @@
     "dependencies": {
         "@types/node": "*",
         "bignumber.js": "~8.0.2",
-        "ethereum-types": "^1.1.6"
+        "ethereum-types": "^2.0.0"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index dec386ccf..b3a083999 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -45,11 +45,16 @@ export interface SignedOrder extends Order {
  * ZeroExTransaction for use with 0x Exchange executeTransaction
  */
 export interface ZeroExTransaction {
+    verifyingContractAddress: string;
     salt: BigNumber;
     signerAddress: string;
     data: string;
 }
 
+export interface SignedZeroExTransaction extends ZeroExTransaction {
+    signature: string;
+}
+
 /**
  * Elliptic Curve signature
  */
@@ -686,22 +691,32 @@ export interface DutchAuctionDetails {
     currentTimeSeconds: BigNumber;
 }
 
+export interface PackageJSONConfig {
+    postpublish?: {
+        assets?: string[];
+        docOmitExports?: string[];
+        dockerHubRepo?: string;
+    };
+    'abis:comment'?: string;
+    abis?: string;
+    ignoreDependencyVersions?: string;
+    ignoreDependencyVersionsForPackage?: string;
+}
+
 export interface PackageJSON {
     private?: boolean;
     version: string;
     name: string;
     main?: string;
     scripts?: { [command: string]: string };
-    config?: {
-        postpublish?: {
-            assets?: string[];
-            docOmitExports?: string[];
-            dockerHubRepo?: string;
-        };
-        'abis:comment'?: string;
-        abis?: string;
-    };
+    config?: PackageJSONConfig;
     dependencies?: { [dependencyName: string]: string };
     devDependencies?: { [dependencyName: string]: string };
     workspaces?: string[];
 }
+
+export interface EIP712DomainWithDefaultSchema {
+    name?: string;
+    version?: string;
+    verifyingContractAddress: string;
+}
diff --git a/packages/typescript-typings/CHANGELOG.json b/packages/typescript-typings/CHANGELOG.json
index e3ae60231..708911720 100644
--- a/packages/typescript-typings/CHANGELOG.json
+++ b/packages/typescript-typings/CHANGELOG.json
@@ -6,7 +6,8 @@
                 "note": "Upgrade the bignumber.js to v8.0.2",
                 "pr": 1517
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/typescript-typings/CHANGELOG.md b/packages/typescript-typings/CHANGELOG.md
index 8f23cce14..a879b1cf5 100644
--- a/packages/typescript-typings/CHANGELOG.md
+++ b/packages/typescript-typings/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v3.0.8 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/typescript-typings/package.json b/packages/typescript-typings/package.json
index 01cab8c63..f135e6f91 100644
--- a/packages/typescript-typings/package.json
+++ b/packages/typescript-typings/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/typescript-typings",
-    "version": "3.0.8",
+    "version": "4.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -27,7 +27,7 @@
         "@types/bn.js": "^4.11.0",
         "@types/react": "*",
         "bignumber.js": "~8.0.2",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "popper.js": "1.14.3"
     },
     "devDependencies": {
diff --git a/packages/utils/CHANGELOG.json b/packages/utils/CHANGELOG.json
index 0fb199e58..9ff26e3e4 100644
--- a/packages/utils/CHANGELOG.json
+++ b/packages/utils/CHANGELOG.json
@@ -1,5 +1,25 @@
 [
     {
+        "version": "4.0.2",
+        "changes": [
+            {
+                "note": "ABI Decode NULL for all data types",
+                "pr": 1587
+            }
+        ],
+        "timestamp": 1549452781
+    },
+    {
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "ABI Decode NULL as False",
+                "pr": 1582
+            }
+        ],
+        "timestamp": 1549373905
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
diff --git a/packages/utils/CHANGELOG.md b/packages/utils/CHANGELOG.md
index ed3f00158..e4b581aef 100644
--- a/packages/utils/CHANGELOG.md
+++ b/packages/utils/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.2 - _February 6, 2019_
+
+    * ABI Decode NULL for all data types (#1587)
+
+## v4.0.1 - _February 5, 2019_
+
+    * ABI Decode NULL as False (#1582)
+
+## v4.0.0 - _Invalid date_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+
 ## v3.0.1 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/utils/package.json b/packages/utils/package.json
index b6be39210..f5b69644e 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/utils",
-    "version": "3.0.1",
+    "version": "4.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -28,7 +28,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/utils/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/detect-node": "2.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -44,19 +44,19 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
         "@types/node": "*",
         "abortcontroller-polyfill": "^1.1.9",
         "bignumber.js": "~8.0.2",
-        "chalk": "^2.4.1",
+        "chalk": "^2.3.0",
         "detect-node": "2.0.3",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
-        "isomorphic-fetch": "^2.2.1",
+        "isomorphic-fetch": "2.2.1",
         "js-sha3": "^0.7.0",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
index f23324721..db4f02b89 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
@@ -47,7 +47,8 @@ export abstract class DataType {
         const hasSelector = !_.isUndefined(selector);
         const rawCalldata = new RawCalldata(calldata, hasSelector);
         const rules_ = _.isUndefined(rules) ? constants.DEFAULT_DECODING_RULES : rules;
-        const value = this.generateValue(rawCalldata, rules_);
+        const value =
+            rawCalldata.getSizeInBytes() > 0 ? this.generateValue(rawCalldata, rules_) : this.getDefaultValue(rules_);
         return value;
     }
 
@@ -71,6 +72,7 @@ export abstract class DataType {
 
     public abstract generateCalldataBlock(value: any, parentBlock?: CalldataBlock): CalldataBlock;
     public abstract generateValue(calldata: RawCalldata, rules: DecodingRules): any;
+    public abstract getDefaultValue(rules?: DecodingRules): any;
     public abstract getSignatureType(): string;
     public abstract isStatic(): boolean;
 }
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
index 2c6c4b0f6..d45088482 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
@@ -97,6 +97,27 @@ export abstract class AbstractSetDataType extends DataType {
         return isStatic;
     }
 
+    public getDefaultValue(rules?: DecodingRules): any[] | object {
+        let defaultValue: any[] | object;
+        if (this._isArray && _.isUndefined(this._arrayLength)) {
+            defaultValue = [];
+        } else if (!_.isUndefined(rules) && rules.shouldConvertStructsToObjects && !this._isArray) {
+            defaultValue = {};
+            _.each(this._memberIndexByName, (idx: number, key: string) => {
+                const member = this._members[idx];
+                const memberValue = member.getDefaultValue();
+                (defaultValue as { [key: string]: any })[key] = memberValue;
+            });
+        } else {
+            defaultValue = [];
+            _.each(this._members, (member: DataType, idx: number) => {
+                const memberValue = member.getDefaultValue();
+                (defaultValue as any[]).push(memberValue);
+            });
+        }
+        return defaultValue;
+    }
+
     protected _generateCalldataBlockFromArray(value: any[], parentBlock?: CalldataBlock): SetCalldataBlock {
         // Sanity check: if the set has a defined length then `value` must have the same length.
         if (!_.isUndefined(this._arrayLength) && value.length !== this._arrayLength) {
diff --git a/packages/utils/src/abi_encoder/calldata/raw_calldata.ts b/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
index 189841989..dbc9d4942 100644
--- a/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
+++ b/packages/utils/src/abi_encoder/calldata/raw_calldata.ts
@@ -79,4 +79,9 @@ export class RawCalldata {
     public getSelector(): string {
         return this._selector;
     }
+
+    public getSizeInBytes(): number {
+        const sizeInBytes = this._value.byteLength;
+        return sizeInBytes;
+    }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/address.ts b/packages/utils/src/abi_encoder/evm_data_types/address.ts
index 2278830eb..7e92d3888 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/address.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/address.ts
@@ -12,6 +12,7 @@ export class AddressDataType extends AbstractBlobDataType {
     private static readonly _ADDRESS_SIZE_IN_BYTES = 20;
     private static readonly _DECODED_ADDRESS_OFFSET_IN_BYTES =
         constants.EVM_WORD_WIDTH_IN_BYTES - AddressDataType._ADDRESS_SIZE_IN_BYTES;
+    private static readonly _DEFAULT_VALUE = '0x0000000000000000000000000000000000000000';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Address;
@@ -43,6 +44,10 @@ export class AddressDataType extends AbstractBlobDataType {
         return valueLowercase;
     }
 
+    public getDefaultValue(): string {
+        return AddressDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Address;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/bool.ts b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
index 23298bc88..24887c509 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/bool.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
@@ -10,6 +10,7 @@ import { constants } from '../utils/constants';
 
 export class BoolDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = true;
+    private static readonly _DEFAULT_VALUE: boolean = false;
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Bool;
@@ -36,7 +37,8 @@ export class BoolDataType extends AbstractBlobDataType {
     public decodeValue(calldata: RawCalldata): boolean {
         const valueBuf = calldata.popWord();
         const valueHex = ethUtil.bufferToHex(valueBuf);
-        const valueNumber = new BigNumber(valueHex, constants.HEX_BASE);
+        // Hack @hysz: there are some cases where `false` is encoded as 0x instead of 0x0.
+        const valueNumber = valueHex === '0x' ? new BigNumber(0) : new BigNumber(valueHex, constants.HEX_BASE);
         if (!(valueNumber.isEqualTo(0) || valueNumber.isEqualTo(1))) {
             throw new Error(`Failed to decode boolean. Expected 0x0 or 0x1, got ${valueHex}`);
         }
@@ -46,6 +48,10 @@ export class BoolDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): boolean {
+        return BoolDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Bool;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
index fa38b63c0..7a49a84b4 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
@@ -9,6 +9,7 @@ import { constants } from '../utils/constants';
 
 export class DynamicBytesDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = false;
+    private static readonly _DEFAULT_VALUE = '0x';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Bytes;
@@ -65,6 +66,10 @@ export class DynamicBytesDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        return DynamicBytesDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.Bytes;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/int.ts b/packages/utils/src/abi_encoder/evm_data_types/int.ts
index f8be1f778..02278f666 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/int.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/int.ts
@@ -15,6 +15,7 @@ export class IntDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = true;
     private static readonly _MAX_WIDTH: number = 256;
     private static readonly _DEFAULT_WIDTH: number = IntDataType._MAX_WIDTH;
+    private static readonly _DEFAULT_VALUE = new BigNumber(0);
     private readonly _width: number;
     private readonly _minValue: BigNumber;
     private readonly _maxValue: BigNumber;
@@ -50,13 +51,20 @@ export class IntDataType extends AbstractBlobDataType {
     public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, this._minValue, this._maxValue);
-        const numberOfBytesInUint8 = 8;
-        if (this._width === numberOfBytesInUint8) {
+        if (this._width === constants.NUMBER_OF_BYTES_IN_INT8) {
             return value.toNumber();
         }
         return value;
     }
 
+    public getDefaultValue(): BigNumber | number {
+        const defaultValue = IntDataType._DEFAULT_VALUE;
+        if (this._width === constants.NUMBER_OF_BYTES_IN_INT8) {
+            return defaultValue.toNumber();
+        }
+        return defaultValue;
+    }
+
     public getSignatureType(): string {
         return `${SolidityTypes.Int}${this._width}`;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
index 250db7c64..50f68f5ea 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
@@ -18,4 +18,9 @@ export class PointerDataType extends AbstractPointerDataType {
     public getSignature(isDetailed?: boolean): string {
         return this._destination.getSignature(isDetailed);
     }
+
+    public getDefaultValue(): any {
+        const defaultValue = this._destination.getDefaultValue();
+        return defaultValue;
+    }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
index cbf1957d7..a965f6796 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
@@ -58,6 +58,13 @@ export class StaticBytesDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        const valueBufPadded = constants.EMPTY_EVM_WORD_BUFFER;
+        const valueBuf = valueBufPadded.slice(0, this._width);
+        const value = ethUtil.bufferToHex(valueBuf);
+        return value;
+    }
+
     private _sanityCheckValue(value: string | Buffer): void {
         if (typeof value === 'string') {
             if (!_.startsWith(value, '0x')) {
diff --git a/packages/utils/src/abi_encoder/evm_data_types/string.ts b/packages/utils/src/abi_encoder/evm_data_types/string.ts
index 97ac46442..f54d739b4 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/string.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/string.ts
@@ -9,6 +9,7 @@ import { constants } from '../utils/constants';
 
 export class StringDataType extends AbstractBlobDataType {
     private static readonly _SIZE_KNOWN_AT_COMPILE_TIME: boolean = false;
+    private static readonly _DEFAULT_VALUE = '';
 
     public static matchType(type: string): boolean {
         return type === SolidityTypes.String;
@@ -52,6 +53,10 @@ export class StringDataType extends AbstractBlobDataType {
         return value;
     }
 
+    public getDefaultValue(): string {
+        return StringDataType._DEFAULT_VALUE;
+    }
+
     public getSignatureType(): string {
         return SolidityTypes.String;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/uint.ts b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
index a82aa789e..d530606b9 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/uint.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
@@ -16,6 +16,7 @@ export class UIntDataType extends AbstractBlobDataType {
     private static readonly _MAX_WIDTH: number = 256;
     private static readonly _DEFAULT_WIDTH: number = UIntDataType._MAX_WIDTH;
     private static readonly _MIN_VALUE = new BigNumber(0);
+    private static readonly _DEFAULT_VALUE = new BigNumber(0);
     private readonly _width: number;
     private readonly _maxValue: BigNumber;
 
@@ -49,13 +50,20 @@ export class UIntDataType extends AbstractBlobDataType {
     public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, UIntDataType._MIN_VALUE, this._maxValue);
-        const numberOfBytesInUint8 = 8;
-        if (this._width === numberOfBytesInUint8) {
+        if (this._width === constants.NUMBER_OF_BYTES_IN_UINT8) {
             return value.toNumber();
         }
         return value;
     }
 
+    public getDefaultValue(): BigNumber | number {
+        const defaultValue = UIntDataType._DEFAULT_VALUE;
+        if (this._width === constants.NUMBER_OF_BYTES_IN_UINT8) {
+            return defaultValue.toNumber();
+        }
+        return defaultValue;
+    }
+
     public getSignatureType(): string {
         return `${SolidityTypes.Uint}${this._width}`;
     }
diff --git a/packages/utils/src/abi_encoder/utils/constants.ts b/packages/utils/src/abi_encoder/utils/constants.ts
index fc586f295..b45b5b8e8 100644
--- a/packages/utils/src/abi_encoder/utils/constants.ts
+++ b/packages/utils/src/abi_encoder/utils/constants.ts
@@ -1,3 +1,5 @@
+import * as ethUtil from 'ethereumjs-util';
+
 import { DecodingRules, EncodingRules } from './rules';
 
 export const constants = {
@@ -14,4 +16,8 @@ export const constants = {
     DEFAULT_DECODING_RULES: { shouldConvertStructsToObjects: true } as DecodingRules,
     DEFAULT_ENCODING_RULES: { shouldOptimize: true, shouldAnnotate: false } as EncodingRules,
     /* tslint:enable no-object-literal-type-assertion */
+    EMPTY_EVM_WORD_STRING: '0x0000000000000000000000000000000000000000000000000000000000000000',
+    EMPTY_EVM_WORD_BUFFER: ethUtil.toBuffer('0x0000000000000000000000000000000000000000000000000000000000000000'),
+    NUMBER_OF_BYTES_IN_UINT8: 8,
+    NUMBER_OF_BYTES_IN_INT8: 8,
 };
diff --git a/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts b/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
index ac2124011..ad07b3d24 100644
--- a/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
+++ b/packages/utils/test/abi_encoder/abi_samples/return_value_abis.ts
@@ -97,3 +97,28 @@ export const mixedStaticAndDynamicReturnValues: MethodAbi = {
     stateMutability: 'nonpayable',
     type: 'function',
 };
+
+export const structuredReturnValue: MethodAbi = {
+    constant: false,
+    inputs: [],
+    name: 'fillOrder',
+    outputs: [
+        {
+            components: [
+                {
+                    name: 'makerAssetFilledAmount',
+                    type: 'uint256',
+                },
+                {
+                    name: 'takerAssetFilledAmount',
+                    type: 'uint256',
+                },
+            ],
+            name: 'fillResults',
+            type: 'tuple',
+        },
+    ],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function',
+};
diff --git a/packages/utils/test/abi_encoder/evm_data_types_test.ts b/packages/utils/test/abi_encoder/evm_data_types_test.ts
index 4814ce28b..c09c0d929 100644
--- a/packages/utils/test/abi_encoder/evm_data_types_test.ts
+++ b/packages/utils/test/abi_encoder/evm_data_types_test.ts
@@ -11,6 +11,7 @@ const expect = chai.expect;
 
 describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
     const encodingRules: AbiEncoder.EncodingRules = { shouldOptimize: false }; // optimizer is tested separately.
+    const nullEncodedArgs = '0x';
     describe('Array', () => {
         it('Fixed size; Static elements', async () => {
             // Create DataType object
@@ -207,6 +208,51 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign NaN value');
         });
+        it('Should decode NULL to default values (Fixed size; Static elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'int[2]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args = [new BigNumber(0), new BigNumber(0)];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic size; Static elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'int[]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: BigNumber[] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Fixed size; Dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'string[2]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args = ['', ''];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic size; Dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'string[]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: string[] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (Dynamic Size; Multidimensional; Dynamic Elements)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'testArray', type: 'bytes[][]' };
+            const dataType = new AbiEncoder.Array(testDataItem);
+            const args: string[][] = [];
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Tuple', () => {
@@ -407,6 +453,46 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Could not assign tuple to object: missing key \'field_2\' in object {"field_1":"-5"}');
         });
+        it('Should decode NULL to default values (static elements only)', async () => {
+            // Create DataType object
+            const testDataItem = {
+                name: 'Tuple',
+                type: 'tuple',
+                components: [{ name: 'field_1', type: 'int32' }, { name: 'field_2', type: 'bool' }],
+            };
+            const dataType = new AbiEncoder.Tuple(testDataItem);
+            // Construct args to be encoded
+            const args = { field_1: new BigNumber(0), field_2: false };
+            // Decode Encoded Args and validate result
+            const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
+            const decodedArgs = dataType.decode(nullEncodedArgs, decodingRules);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default values (static and dynamic elements)', async () => {
+            // Create DataType object
+            const testDataItem = {
+                name: 'Tuple',
+                type: 'tuple',
+                components: [
+                    { name: 'field_1', type: 'int32' },
+                    { name: 'field_2', type: 'string' },
+                    { name: 'field_3', type: 'bool' },
+                    { name: 'field_4', type: 'bytes' },
+                ],
+            };
+            const dataType = new AbiEncoder.Tuple(testDataItem);
+            // Construct args to be encoded
+            const args = {
+                field_1: new BigNumber(0),
+                field_2: '',
+                field_3: false,
+                field_4: '0x',
+            };
+            // Decode Encoded Args and validate result
+            const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
+            const decodedArgs = dataType.decode(nullEncodedArgs, decodingRules);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Address', () => {
@@ -450,6 +536,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw(`Invalid address: '${args}'`);
         });
+        it('Should decode NULL to default value of address zero', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Address', type: 'address' };
+            const dataType = new AbiEncoder.Address(testDataItem);
+            const args = '0x0000000000000000000000000000000000000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Bool', () => {
@@ -489,6 +584,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
             expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
+        it('Should decode NULL to default value of False', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Boolean', type: 'bool' };
+            const dataType = new AbiEncoder.Bool(testDataItem);
+            const args = false;
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Integer', () => {
@@ -687,6 +791,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw();
         });
+        it('Should decode NULL to default value of 0', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Integer (256)', type: 'int' };
+            const dataType = new AbiEncoder.Int(testDataItem);
+            const args = new BigNumber(0);
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Unsigned Integer', () => {
@@ -849,6 +962,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw();
         });
+        it('Should decode NULL to default value of 0', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Unsigned Integer (256)', type: 'uint' };
+            const dataType = new AbiEncoder.UInt(testDataItem);
+            const args = new BigNumber(0);
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Static Bytes', () => {
@@ -1012,6 +1134,33 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign 0x010, which is contains a half-byte. Use full bytes only.');
         });
+        it('Should decode NULL to default value - Single Byte (byte)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Byte', type: 'byte' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x00';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default value - 4 Bytes (bytes4)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Bytes4', type: 'bytes4' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x00000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
+        it('Should decode NULL to default value - 32 Bytes (bytes32)', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Static Bytes32', type: 'bytes32' };
+            const dataType = new AbiEncoder.StaticBytes(testDataItem);
+            const args = '0x0000000000000000000000000000000000000000000000000000000000000000';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('Dynamic Bytes', () => {
@@ -1099,6 +1248,15 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
                 dataType.encode(args, encodingRules);
             }).to.throw('Tried to assign 0x010, which is contains a half-byte. Use full bytes only.');
         });
+        it('Should decode NULL to empty byte array', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'Dynamic Bytes', type: 'bytes' };
+            const dataType = new AbiEncoder.DynamicBytes(testDataItem);
+            const args = '0x';
+            // Decode Encoded Args and validate result
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 
     describe('String', () => {
@@ -1164,5 +1322,14 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
             expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
+        it('Should decode NULL to empty string', async () => {
+            // Create DataType object
+            const testDataItem = { name: 'String', type: 'string' };
+            const dataType = new AbiEncoder.String(testDataItem);
+            // Decode Encoded Args and validate result
+            const args = '';
+            const decodedArgs = dataType.decode(nullEncodedArgs);
+            expect(decodedArgs).to.be.deep.equal(args);
+        });
     });
 });
diff --git a/packages/utils/test/abi_encoder/return_values_test.ts b/packages/utils/test/abi_encoder/return_values_test.ts
index 308d11ee5..ccdac510d 100644
--- a/packages/utils/test/abi_encoder/return_values_test.ts
+++ b/packages/utils/test/abi_encoder/return_values_test.ts
@@ -1,7 +1,7 @@
 import * as chai from 'chai';
 import 'mocha';
 
-import { AbiEncoder } from '../../src/';
+import { AbiEncoder, BigNumber } from '../../src/';
 import { chaiSetup } from '../utils/chai_setup';
 
 import * as ReturnValueAbis from './abi_samples/return_value_abis';
@@ -11,67 +11,194 @@ const expect = chai.expect;
 
 describe('ABI Encoder: Return Value Encoding/Decoding', () => {
     const encodingRules: AbiEncoder.EncodingRules = { shouldOptimize: false }; // optimizer is tested separately.
-    it('No Return Value', async () => {
-        // Decode return value
-        const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
-        const returnValue = '0x';
-        const decodedReturnValue = method.decodeReturnValues(returnValue, { shouldConvertStructsToObjects: false });
-        const expectedDecodedReturnValue: any[] = [];
-        expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
-    });
-    it('Single static return value', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
-        const returnValue = ['0x01020304'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Multiple static return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Single dynamic return value', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
-        const returnValue = ['0x01020304'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
-    });
-    it('Multiple dynamic return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
+    const nullEncodedReturnValue = '0x';
+    describe('Standard encoding/decoding', () => {
+        it('No Return Value', async () => {
+            // Decode return value
+            const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
+            const returnValue = '0x';
+            const decodedReturnValue = method.decodeReturnValues(returnValue, { shouldConvertStructsToObjects: false });
+            const expectedDecodedReturnValue: any[] = [];
+            expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
+        });
+        it('Single static return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Multiple static return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Single dynamic return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Multiple dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Mixed static/dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.mixedStaticAndDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x00000000'];
+
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (multiple; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x00000000', '0x00000000'];
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; dynamic)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x'];
+            const decodedReturnValue = method.decodeReturnValues(nullEncodedReturnValue, {
+                shouldConvertStructsToObjects: false,
+            });
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
     });
-    it('Mixed static/dynamic return values', async () => {
-        // Generate Return Value
-        const method = new AbiEncoder.Method(ReturnValueAbis.mixedStaticAndDynamicReturnValues);
-        const returnValue = ['0x01020304', '0x05060708'];
-        const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
-            shouldConvertStructsToObjects: false,
-        });
-        // Validate decoded return value
-        expect(decodedReturnValue).to.be.deep.equal(returnValue);
+
+    describe('Strict encoding/decoding', () => {
+        it('No Return Value', async () => {
+            // Decode return value
+            const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
+            const returnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<void>(returnValue);
+            const expectedDecodedReturnValue = undefined;
+            expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
+        });
+        it('Single static return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue[0]);
+        });
+        it('Multiple static return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Single dynamic return value', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = ['0x01020304'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue[0]);
+        });
+        it('Multiple dynamic return values', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
+            const returnValue = ['0x01020304', '0x05060708'];
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Struct should include fields', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.structuredReturnValue);
+            const returnValue = {
+                fillResults: {
+                    makerAssetFilledAmount: new BigNumber(50),
+                    takerAssetFilledAmount: new BigNumber(40),
+                },
+            };
+            const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
+            const decodedReturnValue = method.strictDecodeReturnValue<{
+                makerAssetFilledAmount: BigNumber;
+                takerAssetFilledAmount: BigNumber;
+            }>(encodedReturnValue);
+            // Validate decoded return value
+            // Note that only the contents of `fillResults`, not the key itself, is decoded.
+            // This is by design, as only a struct's contents are encoded and returned by a funciton call.
+            expect(decodedReturnValue).to.be.deep.equal(returnValue.fillResults);
+        });
+        it('Should decode NULL as default value (single; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
+            const returnValue = '0x00000000';
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (multiple; static)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
+            const returnValue = ['0x00000000', '0x00000000'];
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<[string, string]>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
+        it('Should decode NULL as default value (single; dynamic)', async () => {
+            // Generate Return Value
+            const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
+            const returnValue = '0x';
+            const encodedReturnValue = '0x';
+            const decodedReturnValue = method.strictDecodeReturnValue<string>(encodedReturnValue);
+            // Validate decoded return value
+            expect(decodedReturnValue).to.be.deep.equal(returnValue);
+        });
     });
 });
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index 4a639f662..e9e85be24 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "timestamp": 1549452781,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
@@ -10,7 +19,8 @@
                 "note": "Update ganache-core to v2.3.3",
                 "pr": 1518
             }
-        ]
+        ],
+        "timestamp": 1549373905
     },
     {
         "timestamp": 1547561734,
diff --git a/packages/web3-wrapper/CHANGELOG.md b/packages/web3-wrapper/CHANGELOG.md
index 5850c5474..82b646a04 100644
--- a/packages/web3-wrapper/CHANGELOG.md
+++ b/packages/web3-wrapper/CHANGELOG.md
@@ -5,6 +5,15 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.1 - _February 6, 2019_
+
+    * Dependencies updated
+
+## v4.0.0 - _February 5, 2019_
+
+    * Upgrade the bignumber.js to v8.0.2 (#1517)
+    * Update ganache-core to v2.3.3 (#1518)
+
 ## v3.2.4 - _January 15, 2019_
 
     * Dependencies updated
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index f28cc36ca..967d2bc34 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/web3-wrapper",
-    "version": "3.2.4",
+    "version": "4.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -36,7 +36,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/web3-wrapper/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.2",
+        "@0x/tslint-config": "^3.0.0",
         "@types/ganache-core": "^2.1.2",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
@@ -54,14 +54,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.23",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "ethereum-types": "^1.1.6",
+        "@0x/assert": "^2.0.1",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
-        "lodash": "^4.17.5"
+        "lodash": "^4.17.11"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/website/less/all.less b/packages/website/less/all.less
index 5d1dccc98..d288b182b 100644
--- a/packages/website/less/all.less
+++ b/packages/website/less/all.less
@@ -88,13 +88,6 @@ code {
         color: #1d5cde; // linkBlue
     }
 
-    h1,
-    h2,
-    h3,
-    h4 {
-        padding-top: 15px;
-    }
-
     p,
     blockquote,
     ol,
diff --git a/packages/website/package.json b/packages/website/package.json
index ce7ed395f..77295d4de 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/website",
-    "version": "0.0.67",
+    "version": "0.0.70",
     "engines": {
         "node": ">=6.12"
     },
@@ -20,18 +20,18 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/asset-buyer": "^4.0.2",
-        "@0x/contract-addresses": "^2.2.0",
-        "@0x/contract-wrappers": "^5.0.1",
-        "@0x/json-schemas": "^2.1.7",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/react-docs": "^1.0.25",
-        "@0x/react-shared": "^1.1.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
+        "@0x/asset-buyer": "^5.0.2",
+        "@0x/contract-addresses": "^2.2.1",
+        "@0x/contract-wrappers": "^7.0.1",
+        "@0x/json-schemas": "^3.0.1",
+        "@0x/order-utils": "^6.0.0",
+        "@0x/react-docs": "^2.0.2",
+        "@0x/react-shared": "^2.0.2",
+        "@0x/subproviders": "^3.0.1",
+        "@0x/types": "^2.0.1",
+        "@0x/typescript-typings": "^4.0.0",
+        "@0x/utils": "^4.0.2",
+        "@0x/web3-wrapper": "^4.0.1",
         "@reach/dialog": "^0.1.2",
         "@types/react-lazyload": "^2.3.1",
         "@types/react-loadable": "^5.4.2",
@@ -42,7 +42,7 @@
         "blockies": "^0.0.2",
         "bowser": "^1.9.3",
         "deep-equal": "^1.0.1",
-        "ethereum-types": "^1.1.6",
+        "ethereum-types": "^2.0.0",
         "ethereumjs-util": "^5.1.1",
         "find-versions": "^2.0.0",
         "jsonschema": "^1.2.0",
@@ -97,7 +97,7 @@
         "@types/rc-slider": "^8.6.0",
         "@types/react": "^16.7.7",
         "@types/react-copy-to-clipboard": "^4.2.0",
-        "@types/react-dom": "^16.0.7",
+        "@types/react-dom": "^16.0.6",
         "@types/react-helmet": "^5.0.6",
         "@types/react-redux": "^4.4.37",
         "@types/react-scroll": "1.5.3",
diff --git a/packages/website/ts/components/mobileNav.tsx b/packages/website/ts/components/mobileNav.tsx
index d43bbe50e..1aa826755 100644
--- a/packages/website/ts/components/mobileNav.tsx
+++ b/packages/website/ts/components/mobileNav.tsx
@@ -6,6 +6,7 @@ import { Link } from 'react-router-dom';
 
 import { WrapGrid, WrapProps } from 'ts/components/newLayout';
 import { WebsitePaths } from 'ts/types';
+import { constants } from 'ts/utils/constants';
 
 interface Props {
     isToggled: boolean;
@@ -41,7 +42,7 @@ export class MobileNav extends React.PureComponent<Props> {
                                 <Link to={WebsitePaths.AboutMission}>About</Link>
                             </li>
                             <li>
-                                <a href="https://blog.0xproject.com/latest" target="_blank">
+                                <a href={constants.URL_BLOG} target="_blank">
                                     Blog
                                 </a>
                             </li>
diff --git a/packages/website/ts/utils/constants.ts b/packages/website/ts/utils/constants.ts
index ada8de549..03c1a0b83 100644
--- a/packages/website/ts/utils/constants.ts
+++ b/packages/website/ts/utils/constants.ts
@@ -74,7 +74,7 @@ export const constants = {
     URL_ANGELLIST: 'https://angel.co/0xproject/jobs',
     URL_APACHE_LICENSE: 'http://www.apache.org/licenses/LICENSE-2.0',
     URL_BITLY_API: 'https://api-ssl.bitly.com',
-    URL_BLOG: 'https://blog.0xproject.com/latest',
+    URL_BLOG: 'https://blog.0xproject.com',
     URL_DISCOURSE_FORUM: 'https://forum.0x.org',
     URL_ECOSYSTEM_APPLY: 'https://0x.smapply.io/',
     URL_ECOSYSTEM_BLOG_POST: 'https://blog.0xproject.com/announcing-the-0x-ecosystem-acceleration-program-89d1cb89d565',