• Added MySQL storage option

storage:
  # Storage type: yaml or mysql
  type: mysql
  
  # MySQL configuration (only used if type is mysql)
  mysql:
    host: localhost
    port: 3306
    database: minecraft
    username: root
    password: password
    table-prefix: ezbounty_

• Added "Create Bounty" GUI for better UX while creating bounties, can be opened with /bounty create !Create Bounty GUI

Functional improvements

• Fixed issues in GUIs
• Fixed issue in message prefix

Code improvements

• Added feature tests
• Added unit tests
• Split command class into class per subcommand

First public release