Version 1.4
Added

• Support for Oraxen custom items.
• Support for ItemsAdder custom items (not tested yet as I don't own the plugin).
• Support for MiniMessage in all strings (legacy formatting will be removed in a future release, the API will use only Adventure components).
• Item lists as WHITELIST, BLACKLIST and NONE along with custom items support.

Fixed

• Some calls to format strings were being made twice.

Note
If you can't find some options, try deleting your config.yml file and restarting your server, or add them manually. Latest config.yml