Small Fixes [1.8.4]

FIXED:

• Fixed an issue when returning UUIDs/IntArrays
• Fixed some issues with legacy NBT for blocks/entities
• Fixed some issue with different number lists/arrays
• Fixed an issue where some lists were not clearing

ADDED:

• Added beacon effect event
• Added more event values for anvil break event

CHANGED:

• Better handling of invalid NBT (will actually show what is wrong with it)
• Better handling of null NBT values
• NBT UUID now returns a random uuid when entity/player is missing
• Added support for a sender in send component effect