This enables us a fast reference to the entities current chunk instead
of having to look it up by hashmap lookups.
We also store counts by type to further enable other performance optimizations in later patches.
This only impacted people who used our useSnapshots new API in a plugin,
which obviously was no one as the data result was completely broken.
Merged the NPE check patch into mine since it has to handle it too.
This event is called when an entity receives knockback by another entity. The knockback can be modified in the event. If the event is cancelled the entity is not knocked back.
Aikar
Brokkonaut