Many new Creature properties

_angry for Wolf, PigZombie
_age for animals
_agelock for animals
_canbreed for animals
_isbaby for animals and Zombie
_isvillager for Zombie
_ispowered for Creeper
_profession for Villager
_sitting for Wolf
_collarcolor for Wolf
_anger for PigZombie
_playercreated for IronGolem