Added Gamemode toggles (true = enabled, false = disabled) Configuration updating will be required as there are new values. Please make sure your configuration file is updated accordingly.
Changed Fireball Item Identification to using persistent item data (ItemMeta#getPersistentDataContainer) instead of checking item stack parity.
Disabled configuration updating as I'll be changing it to be fully modular and compatible with spigots updated configuration comments & saving format for the next release.