Add null checks for API methods
Swap arguments for `/petadmin remove`
Move loadPets() to PetHandler
Add RED to Sheep and Wolf PetMenu
Add a configurable option for allowing Pets to attack Players
Add utility methods for removing Goals from a Pet's AI
Change return type of loadPets()
Add ItemUtil class for use in PetMenu
Add more commands. ADDS #23

Adds:
/pet show
/pet hide