I wanted to add armory chest support but the current state of the
inventory was a little frustrating. Adding new containers was too
difficult, so I made the system *even more* generic and easier to use. I
have also split it up into it's own module with a nicer file layout.
Oh yeah, and armory chest works too now.
Everyone's favorite copying mechanism/purchasable item is now functional
in Kawari. The item doesn't disappear once you use it, because there's
no API for that yet.
