Expert Mode Undead Horses

This module aims to implement more functionality into the undead horse variants of minecraft. Skeleton Horses still appear from mysterious storms, and must be freed from those traps in order to acquire one. Zombie Horses on the other hand, only appear when the player slays a living horse. These undead horses hold a powerful defense against the undead mobs, as the rider becomes protected from the horse's variant of mob. Skeletons will not draw their bows while you ride a skeleton horse. And likewise, the Zombie Horde will leave you be if you ride into battle with a zombie horse.