New featuers:

Added new spell interface for spell applying, switching and extracting.
Use /spell to access this interface.

Note, that previous configuration options for spells will be replaced and will have to be edited if you had change them.

Added options for fishing loot:
- clear-enchantments - if true then all enchantments will be removed
- convert-enchantments - if true then all enchantments will be converted to custom enchantments
- books-to-orbs - if true then all enchantment books will be changed to enchantment orbs

New commands:

For spell applying, switching and extracing:
- command: /spell
- aliases: /spellitem, /itemspell, /usespell