Update contract-wrappers everywhere (#2068)

* add validateAndSendTransactionAsync to all wrappers

* remove contract-wrappers from @0x/contracts-extensions

* replace error types in contract-wrappers

* upgrade asset-buyer and asset-swapper to contract-wrappers v11

* update website and 0x.js

* remove calldataOptimizationUtils

packages/contract-wrappers/test/coordinator_wrapper_test.ts

@@ -1,4 +1,3 @@
-import { CoordinatorRegistryContract } from '@0x/abi-gen-wrappers';
 import { constants } from '@0x/contracts-test-utils';
 import { defaultOrmConfig, getAppAsync } from '@0x/coordinator-server';
 import { BlockchainLifecycle, tokenUtils } from '@0x/dev-utils';
@@ -12,6 +11,7 @@ import 'mocha';
 import * as nock from 'nock';
 
 import { ContractWrappers } from '../src';
+import { CoordinatorRegistryContract } from '../src/index';
 import { CoordinatorServerErrorMsg } from '../src/utils/coordinator_server_types';
 
 import { chaiSetup } from './utils/chai_setup';

packages/contract-wrappers/test/utils/token_utils.ts

@@ -1,7 +1,8 @@
-import { DummyERC721TokenContract } from '@0x/abi-gen-wrappers';
 import { generatePseudoRandomSalt } from '@0x/order-utils';
 import { BigNumber } from '@0x/utils';
 
+import { DummyERC721TokenContract } from '../../src/index';
+
 import { provider, txDefaults, web3Wrapper } from './web3_wrapper';
 
 // Those addresses come from migrations. They're deterministic so it's relatively safe to hard-code them here.