v1.5.7

- Allow user with token balance 0 to make TXs

v2.1.1-beta

• Fix pool fullnode
• Add order pool api
• Fix debug trace "nonce too low"

v1.5.6

- Fix missing snapshot signers

- Add slave mode

v1.5.5

- Fix muliple coinbases issue

- Add static node
- Get signers from contract

v2.0.2-beta

- Fix slice out of range

- Fix order rlp message

v1.5.4

- Send tx fee to masternode owner address