* v2-prototype: (97 commits)
Fix typos in comments
Add modifier and tests for removeAuthorizedAddressAtIndex
Update and add tests
Change removeAuthorizedAddress => removeAuthorizedAddressAtIndex
Move isFunctionRemoveAuthorizedAddress to test
Fix usage of `popLastByte`
Fix LibBytes is a library
Remove `areBytesEqual`
Fix usage of `contentAddress()`
Clean low bits in bytes4
Clean high bits in address
Refactor LibBytes.readBytes4 for consistency
Fix LibBytes.equals
Add trailing garbage testcase for LibBytes.equals
Rename bytes.equals
Add slice and sliceDestructive
Rename bytes.rawAddress and add bytes.contentAddress
Rename read/writeBytesWithLength
Using LibBytes for bytes
Make LibBytes a library
...
# Conflicts:
# packages/contracts/src/utils/constants.ts
# packages/contracts/test/exchange/core.ts
* v2-prototype: (45 commits)
Check length before accessing indices, add awaitTransactionSuccess where needed, and rename function
Add back before/after snapshots for each test
Rename Signer to Wallet, rename GAS_ESTIMATE to GAS_LIMIT
Make preSigned and allowedValidators mappings public
Change names of signature types
Fix formatting and tests
Make AssetProxyId last byte of assetData
Add signer to txHash, allow approveValidator to be used with executeTransaction
Update Whitelist
Fix Exchange interface
Increase block gas limit
Use last byte of signature as signature type
Remove TxOrigin signature type, modify whitelist to use Validator signature type
Update Whitelist contract with comments, also require maker to be whitelisted
Fix build
Add example whitelist contract and minimum tests
Add sample whitelist contract
Add TxOrigin signature type and rearrange order of types
Add approveValidator function
Add Validator signature type
...
# Conflicts:
# packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
# packages/contracts/src/utils/types.ts
# packages/contracts/test/exchange/transactions.ts
# packages/order-utils/src/asset_proxy_utils.ts
