Summery:
In this update I added two new enchantments for bows and added api support for bows

Enchantments:
Explosive (bows) - This enchantment will cause an explosion(does not damage ground) that deals one extra half a heart of damage per level of this enchantment

Infinity (bows) - This enchantment does the exact same thing the normal enchantment does

API:
For the api support, I added two classes you should be thinking about:

BowEnchantment - superclass of all bow related enchantments
BowEnchantmentTrigger - enum of all bow exclusive enchantment triggers