Adds some interesting mobs

Seen on Spigot

Mobs naturally spawn around the world.

Name		Name	Last commit message	Last commit date
assets/vanillaex		assets/vanillaex
.gitattributes		.gitattributes
README.md		README.md
baby_enderman.iaentitymodel		baby_enderman.iaentitymodel
baby_enderman.yml		baby_enderman.yml
crawler_zombie.iaentitymodel		crawler_zombie.iaentitymodel
crawler_zombie.yml		crawler_zombie.yml
end_zombie.iaentitymodel		end_zombie.iaentitymodel
end_zombie.yml		end_zombie.yml
happy_creeper.iaentitymodel		happy_creeper.iaentitymodel
happy_creeper.yml		happy_creeper.yml
other_steve.iaentitymodel		other_steve.iaentitymodel
other_steve.yml		other_steve.yml
redstone_bug.iaentitymodel		redstone_bug.iaentitymodel
redstone_bug.yml		redstone_bug.yml