v2.1.2

1. Add smart tips
2. Add exchange-func

v2.1.1

2.1.1

Pre-Mainnet

1. New address type: constract（Affect hdAddr, privToAddr）
2. Delete all of the snapshotHash and timestamp
3. The function createContract add params

constant

1. Quota_Addr = > Pledge_Addr
2. contractAddrs.Quota => contractAddrs.Pledge
3. Mint_CancelPledge => CancelMintPledge
4. Add blockType（SendRefund，GenesisReceive）
5. Add builtinTxType（SendRefund，GenesisReceive）

addrAccount

1. Add sendAccountBlock
2. Add calloffChainContract
3. Delete getFittestSnapshotHash
4. Add getTokenInByowner
5. Add getBlock

client

1. buildinTxBlock => builtinTxBlock
2. Add pow
3. Add testapi
4. Add callOffChainContract
5. Add sendTx（the same as old-sendRawTx）
6. Add sendAutoPowTx
7. Add sendRawTx （change to send signed accountblock）

HdAccount

1. constructor addrTotalNum => maxAddrNum
2. activateAccount add params
3. Add getAccount

ed25519

1. keyPair's return value change to { publicKey, privateKey }