Merge pull request #41 from hebrecht/master

Added ability to fix the yaw of the head of entities a specific value.
Fixed DesireKillTarget and DesireAttackOnCollide not working properly.
Fixed not calling behavior onAdd and onRemove.

No idea how I never came across this. I'm sorry.
Fixed damage behavior not getting executed properly.
Fixed default InventoryFeature size.
Fixed error in DesireFollowTamer when entity was not tamed.
Added ability to add more than one desire at once.
Added ability to get default desires for entities.
Cleanup of imports from last commit.
Fixed not applying default goals when entity does not get queued.
Not only despawn all entities when the specific plugin gets disabled, also when RemoteEntities gets disabled.
Added ability to automatically save entities on despawning all.
Added base for new pathfinding.
How did that happen o.O?
Now the concurrent exception should definitley be gone.
Fixed not wanting to swim up in water.
Small changes to the readme.
Finished up pathfinder to be used by entities.
Use beta release dependency.
Added checker to avoid water.