Some work on trying to get wands to combine in an anvil.

Seems like this doesn't work out. I fear it may be client-side?
Remove the to/from string methods from InventoryUtils.

I don't use these anymore, and they rely on NBT methods no longer
available in 1.7
Fix limited-use wands.

Durability no longer works on blaze rods? Might be a temporary 1.7 bug,
but really that's not the way to go unless the bar shows up in the
client, anyway.
Fix cooldown and cost reduction being tied together.
Change the mana system to only use one xp bar
Some hacky attempts at allowing combining wands on an anvil