MD Gacha Machine 3.2.1: automatic refunds are now up to you

Hello everyone! 

Following the issue that occurred at the end of May – where some SL transaction history was misinterpreted and a machine’s continuous refund to a player whom was pulling very fast in a laggy region had been mistakenly accused as hack and to steal money from the machine’s owner – I have decided to make the gacha machine’s auto-refund feature optional.