Another Puzzle Dungeon Update

Ok, last update... it's waaaay past my bedtime. :) I've added the ability to use spades to dig through--yes, THROUGH!--walls. It's pretty fun to do. Try it, you'll like it! (Unless I introduced some horrible bug... which is possible, given how late it is... oh, well). Anyway, enjoy! (And let me know if it causes any problems!)