The remaining methods, constants and fields in the NBT class now pertain to generic NBT functionality (except for the matchList()/matchTree() methods, but that's a job for another time). All NBT I/O specific logic has now been moved to NBTStream and its descendents.
* Removed broken EntityEatEvents - these don't fit the pattern since they only apply to Human entities anyway. PlayerItemConsumeEvent and PlayerInteractEvent can be used for cancellation purposes, and plugins can do custom stuff without mess.
* Restrict item consuming to Living entities only
* Added FoodSource->requiresHunger()
* Only items implementing the Consumable interface can now be consumed.
* The effects from consuming items are now generic-ized by way of the Living->consume() function. This is overridden in Human to allow applying food and hunger.
* Fixed the hardcoded mess for buckets
* Enchantment: Split enchantment type data from instance data
This commit splits enchantments into (effectively) enchantment TYPES vs enchantment INSTANCES.
When applying an enchantment to an item, it only needs to know 2 things:
1. the enchantment ID (identifier) which is used to identify the TYPE
2. the enchantment LEVEL which is used to modify the enchantment's power IN THIS INSTANCE.
Therefore, the LEVEL is not an immutable property. However, all other properties of the currently-named "Enchantment" class are immutable type properties.
Currently, when applying an enchantment to an item, a copy of the enchantment object is created from the registry, and returned. This copies all of the properties contained by the type, which is obviously sub optimal.
This change resulted from many complaints and ugly boilerplate code because getNamedTag() is only ever used when you want to read from the tag or modify it. If you have code that depends on this returning null, you should use hasCompoundTag() instead.
the count parameter is useless since Item ctor should now only be used for constructing item _types_, not actual items. All item creations for inventories etc, should go through the ItemFactory.
