Merge branch 'development' into feature/testnet-faucets/order-dispenser

* development: (37 commits)
  Add dates to CHANGELOGs
  Change CHANGELOGs
  Add .editorconfig
  Fix a typo
  Temp
  Use forEach instead of map
  Add PR number
  Fix an exception when a signature collision happens
  Fix prettier
  Add regression tests
  Improve the comment and fix an exception
  Add missing comas
  Lerna-ignore tslint and tsconfig
  Update contract versions, fix tests
  Rename directories
  Rename previous contracts, fix imports, add nested file structure
  Move all contracts into a single directory
  Update import
  Fix import
  Get rid of suffixed contract versioning and replace it with a poor-mans package manager. Versions are stored locally, and are generated in a copy-on-write basis as required
  ...

4 files changed, 34 insertions, 14 deletions

diff --git a/packages/utils/CHANGELOG.md b/packages/utils/CHANGELOG.md
index efee30dd1..b94e2ccee 100644
--- a/packages/utils/CHANGELOG.md
+++ b/packages/utils/CHANGELOG.md
@@ -1,6 +1,10 @@
 # CHANGELOG
 
+## v0.3.0 - _February 5, 2018_
+
+    * Fix a bug related to event signature collisions (argument indexes aren't included in event signatures) in the abi_decoder. The decoder used to throw on unknown events with identical signatures as a known event (except indexes). (#366)
+
 ## v0.2.0 - _January 17, 2018_
 
-* Add `onError` parameter to `intervalUtils.setAsyncExcludingInterval` (#312)
-* Add `intervalUtils.setInterval` (#312)
+    * Add `onError` parameter to `intervalUtils.setAsyncExcludingInterval` (#312)
+    * Add `intervalUtils.setInterval` (#312)
diff --git a/packages/utils/README.md b/packages/utils/README.md
index d6cacfa11..ffb0d0190 100644
--- a/packages/utils/README.md
+++ b/packages/utils/README.md
@@ -40,6 +40,12 @@ yarn install
 yarn build
 ```
 
+or
+
+```bash
+yarn build:watch
+```
+
 ### Lint
 
 ```bash
diff --git a/packages/utils/package.json b/packages/utils/package.json
index db82f8040..e276d5e5a 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,10 +1,11 @@
 {
     "name": "@0xproject/utils",
-    "version": "0.2.3",
+    "version": "0.2.4",
     "description": "0x TS utils",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
     "scripts": {
+        "build:watch": "tsc -w",
         "build": "tsc",
         "clean": "shx rm -rf lib",
         "lint": "tslint --project . 'src/**/*.ts'"
@@ -19,14 +20,14 @@
     },
     "homepage": "https://github.com/0xProject/0x.js/packages/utils/README.md",
     "devDependencies": {
-        "@0xproject/tslint-config": "^0.4.5",
-        "@0xproject/types": "^0.1.5",
+        "@0xproject/tslint-config": "^0.4.6",
+        "@0xproject/types": "^0.1.8",
         "@types/lodash": "^4.14.86",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
-        "web3-typescript-typings": "^0.9.5",
-        "typescript": "~2.6.1"
+        "typescript": "2.7.1",
+        "web3-typescript-typings": "^0.9.8"
     },
     "dependencies": {
         "bignumber.js": "~4.1.0",
diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts
index f96ee2edb..368973b1b 100644
--- a/packages/utils/src/abi_decoder.ts
+++ b/packages/utils/src/abi_decoder.ts
@@ -18,7 +18,7 @@ export class AbiDecoder {
         return `0x${formatted}`;
     }
     constructor(abiArrays: Web3.AbiDefinition[][]) {
-        _.map(abiArrays, this._addABI.bind(this));
+        _.forEach(abiArrays, this._addABI.bind(this));
     }
     // This method can only decode logs from the 0x & ERC20 smart contracts
     public tryToDecodeLogOrNoop<ArgsType>(log: Web3.LogEntry): LogWithDecodedArgs<ArgsType> | RawLog {
@@ -36,9 +36,14 @@ export class AbiDecoder {
         const dataTypes = _.map(nonIndexedInputs, input => input.type);
         const decodedData = SolidityCoder.decodeParams(dataTypes, logData.slice('0x'.length));
 
-        _.map(event.inputs, (param: Web3.EventParameter) => {
+        let failedToDecode = false;
+        _.forEach(event.inputs, (param: Web3.EventParameter) => {
             // Indexed parameters are stored in topics. Non-indexed ones in decodedData
             let value: BigNumber | string = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++];
+            if (_.isUndefined(value)) {
+                failedToDecode = true;
+                return;
+            }
             if (param.type === SolidityTypes.Address) {
                 value = AbiDecoder._padZeros(new BigNumber(value).toString(16));
             } else if (
@@ -51,11 +56,15 @@ export class AbiDecoder {
             decodedParams[param.name] = value;
         });
 
-        return {
-            ...log,
-            event: event.name,
-            args: decodedParams,
-        };
+        if (failedToDecode) {
+            return log;
+        } else {
+            return {
+                ...log,
+                event: event.name,
+                args: decodedParams,
+            };
+        }
     }
     private _addABI(abiArray: Web3.AbiDefinition[]): void {
         _.map(abiArray, (abi: Web3.AbiDefinition) => {