Merge branch 'v2-prototype' into feature/website/jobs-page-part2

* v2-prototype: (38 commits)
  Revert "Publish"
  Publish
  Remove ERC721 callback functions
  Use != instead of > in loops, add sanity checks to market fill functions
  Add more tests and fixes
  Remove MConstants and MixinConstants for LibConstants
  Remove redundant external call by reimplementing fillOrderNoThrow
  Remove orders length check
  Add assertValidFillResults
  Update web3Wrapper CHANGELOG
  Get actual gasPrice from transaction instead of setting default
  Store orders length in varible before looping over orders
  Use transferFrom instead of safeTransferFrom
  Fix minimal tests
  Fix rounding error issues, use different logic when makerAsset is ZRX
  Rename marketSellEth => marketSellWeth
  Update percentage constants
  Update transferEthFeeAndRefund, add check to ERC721 transfer
  Refactor forwarding contract architecture, remove batch functions
  Updated CHANGELOGS
  ...

1 files changed, 14 insertions, 1 deletions

diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts
index 4439eb284..dd35e2094 100644
--- a/packages/web3-wrapper/src/web3_wrapper.ts
+++ b/packages/web3-wrapper/src/web3_wrapper.ts
@@ -14,6 +14,7 @@ import {
     Provider,
     RawLogEntry,
     TraceParams,
+    Transaction,
     TransactionReceipt,
     TransactionReceiptWithDecodedLogs,
     TransactionTrace,
@@ -221,6 +222,19 @@ export class Web3Wrapper {
         return transactionReceipt;
     }
     /**
+     * Retrieves the transaction data for a given transaction
+     * @param txHash Transaction hash
+     * @returns The raw transaction data
+     */
+    public async getTransactionByHashAsync(txHash: string): Promise<Transaction> {
+        assert.isHexString('txHash', txHash);
+        const transaction = await this._sendRawPayloadAsync<Transaction>({
+            method: 'eth_getTransactionByHash',
+            params: [txHash],
+        });
+        return transaction;
+    }
+    /**
      * Retrieves an accounts Ether balance in wei
      * @param owner Account whose balance you wish to check
      * @returns Balance in wei
@@ -292,7 +306,6 @@ export class Web3Wrapper {
      */
     public async signMessageAsync(address: string, message: string): Promise<string> {
         assert.isETHAddressHex('address', address);
-        assert.isETHAddressHex('address', address);
         assert.isString('message', message); // TODO: Should this be stricter? Hex string?
         const signData = await this._sendRawPayloadAsync<string>({
             method: 'eth_sign',