Day 1 patch

1. yeah uh apparently if you press the same movement key on wasd and arrow at the same time soko can clip through  walls. I have revoked your wasd privilage.

2. Added in a reset key, in case you manage to clip out of bounds anyway. There are signs that telegraph this.

3. Edited puzzle 21 so that you are less likely to walk on a tile that would trivialize the puzzle.