Entity Fixes

I'm not going to go for dev23 until vectors are ready, but some things really needed fixing now.

• Updated Residence (closes #307)
• Potentially fixed potential NullPointerException (relates #302)
• Fixed entity types not working reliably on 1.11 (closes #292) and generally improved entity type handling

Entities on 1.11
Guardians: normal guardian, elder guardian == guardian (supertype)
Skeletons: wither skeleton, stray, skeleton (also matches wither skele and stray) == skeleton (supertype)
Horses: donkey, mule, llama, undead horse, skeleton horse, horse (which is normal and only normal horse) == any horse (supertype)
Chested horses: donkey, mule, llama == chested horse (supertype)

It is worth noting that you can't refer to horse in event which involves any horse. If you do, it will be none if the event was triggered by donkey, mule, llama, undead horse or skeleton horse. Instead, use entity (or victim etc.).