* move orderParsingUtils from order-utils to connect
* Remove many functions from signatureUtils
Removed from the exported object, that is. All of them are used in
other existing code, so they were all moved to be as local to their
usage as possible.
* remove orderHashUtils.isValidOrderHash()
* Move all *RevertErrors from order-utils...
...into their respective @0x/contracts- packages.
* Refactor @0x/order-utils' orderHashUtils away
- Move existing routines into @0x/contracts-test-utils
- Migrate non-contract-test callers to a newly-exposed getOrderHash()
method in DevUtils.
* Move all *RevertErrors from @0x/utils...
...into their respective @0x/contracts- packages.
* rm transactionHashUtils.isValidTransactionHash()
* DevUtils.sol: Fail yarn test if too big to deploy
* Refactor @0x/order-utils transactionHashUtils away
- Move existing routines into @0x/contracts-test-utils
- Migrate non-contract-test callers to a newly-exposed
getTransactionHash() method in DevUtils.
* Consolidate `Removed export...` CHANGELOG entries
* Rm EthBalanceChecker from devutils wrapper exports
* Stop importing from '.' or '.../src'
* fix builds
* fix prettier; dangling promise
* increase max bundle size
`@0x/contracts-utils`: Correct internal variable naming in `src/index.ts`.
`@0x/contracts-exchange`: Remove functions from `TestExchangeInternals.sol` that are now in other packages.
`@0x/contracts-exchange`: Remove `TestExchangeMath.sol`. Exchange math functions are now tested in `@0x/contracts-exchange-libs`.
`@0x/contracts-exchange`: Move `ReferenceFunctions` to default package export.
`@0x/contracts-exchange`: Update `match_order.ts` tests to use reference math functions instead of `TestExchangeMath`.
`@0x/contracts-exchange`: Remove `_updateFilledState()` combinatorial tests in favor of normal unit testing. Combinatorial testing was overkill.
`@0x/contracts-exchange`: Update/refactor `calculateFillResults()` combinatorial tests to use the reference functions and hide them behind `TEST_ALL`.
