Switch to official 0x version 2 contract for settlement
Referral partnerID and flexible fee rate specified via API
More flexible support for orders placed on behalf of smart-contracts
submitOrderV2 and submitOrder are both valid methods for compatibility with those who tested using v2 on kovan, but will both now send orders with v2 order format
New release includes:
submitOrderV2andsubmitOrderare both valid methods for compatibility with those who tested using v2 on kovan, but will both now send orders with v2 order format