1. Fix user system discount value calculation behavior.
Logic will be revised as if old qty is 1 with discount , when user change quantity, system will multiply discount value with new Qty as new discount value.
But if old qty is not 1, when user change quantity, discount value will remain unchanged until it is greater than [ItemAmount] then discount value will be reset to zero.
2. Enhanced kitchen multi printer printing report format define by printer
3. Update iPay88API.dll and BoostApiSDK.dll