The new WOOFi router smart contract added
- more slippage checks to prevent users from unreasonable slippage on swaps
- native coin rescue to recover accidental transfer to the smart contract address
新增WOOFi路由器智能合约
-增加滑动检查，防止用户在掉期交易中出现不合理的滑动
-native coin rescue可恢复到智能合约地址的意外转移