@0x/protocol-utils (#76)

* add new packages

* `@0x/protocol-utils`: Update with latest code from `@0x/contracs-zero-ex` + misc stuff

* @0x/contracts-zero-ex`: Switch to using `@0x/protocol-utils` in most places

* @0x/protocol-types`: Delete this package.

* regen yarn lock

* `@0x/contracts-zero-ex`: Unpin `@0x/protocol-utils` dep.

* `@0x/contracts-integrations`: Fix borken test

* update changelogs

* `@0x/protocol-utils`: Update deps

* `@0x/protocol-utils`: add tests

* `@0x/protocol-utils`: More tests

* `@0x/protocol-utils`: Update readme.

* update deps

* run prettier

* `@0x/contract-artifacts`: Regenerate artifacts

* `@0x/contract-wrappers`: Regenerate wrappers

* `@0x/protocol-utils`: Update changelog

* `@0x/contract-wrappers`: Export stuff for doc gen

* `@0x/protocol-utils`: Use `Web3Wrapper.signTypedDataV4Async()` for MM compatibility.

* upgrade org deps

Co-authored-by: Lawrence Forman <me@merklejerk.com>

contracts/integrations/test/exchange-proxy/mtx_test.ts

@@ -6,19 +6,17 @@ import {
     artifacts as exchangeProxyArtifacts,
     IZeroExContract,
     LogMetadataTransformerContract,
-    Signature,
 } from '@0x/contracts-zero-ex';
 import { migrateOnceAsync } from '@0x/migrations';
+import { assetDataUtils, signatureUtils, SignedExchangeProxyMetaTransaction } from '@0x/order-utils';
 import {
-    assetDataUtils,
     encodeFillQuoteTransformerData,
     encodePayTakerTransformerData,
     ETH_TOKEN_ADDRESS,
     FillQuoteTransformerSide,
     findTransformerNonce,
-    signatureUtils,
-    SignedExchangeProxyMetaTransaction,
-} from '@0x/order-utils';
+    Signature,
+} from '@0x/protocol-utils';
 import { AssetProxyId, Order, SignedOrder } from '@0x/types';
 import { BigNumber, hexUtils } from '@0x/utils';
 import * as ethjs from 'ethereumjs-util';