Merge branch 'v2-prototype' into refactor/contracts/remove0xjsDep

* v2-prototype:
  Fix tslint issues
  Add `are` to boolean naming conventions
  Fix tslint
  Fix the tsutils version, fixing ts typings issue
  Rename some variables in multi_sig_with_time_lock.ts
  Remove extra awaitTransactionMinedAsync calls
  Update artifacts
  Update yarn.lock
  Fix warnings in Metacoin
  Upgrade UglifyJS to include ES6 support
  Add CancelOrder and MatchOrder types
  Add missing return types
  Ignore classnames linter rule
  Apply changes to test/exchange/match_orders.ts
  Fix some unhandled promise rejections
  Add awaitTransactionMinedAsync after every sent transaction
  Add missing blockchainLifecycle calls to contracts tests

# Conflicts:
#	packages/contracts/src/utils/exchange_wrapper.ts
#	packages/contracts/test/asset_proxy/proxies.ts
#	packages/contracts/test/exchange/dispatcher.ts
#	packages/contracts/test/multi_sig_with_time_lock.ts

packages/contracts/test/libraries/lib_bytes.ts

@@ -32,6 +32,12 @@ describe('LibBytes', () => {
     const testBytes32 = '0x102030405060708090a0b0c0d0e0f0102030405060708090a0b0c0d0e0f01020';
     const testUint256 = new BigNumber(testBytes32, 16);
 
+    before(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    after(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     before(async () => {
         // Setup accounts & addresses
         const accounts = await web3Wrapper.getAvailableAddressesAsync();