Daplow's Mob Revamp

Wither Skeleton Update:

• New Item called Wither Bone now drops from Wither Skeleton.
• New Item called Wither Bone Meal can now be crafted from Wither Bones and does the opposite of bonemeal.
• New Block called Wither Bone Block can be crafted from Wither Bone Meal and gives you the wither effect when standing on it.