Post-jam updates

A lot of updates here, I'm not even sure I can list them all. Main things are that the art for the walls and floor are now in there, and there's only one map instead of the buggy random level generator. I'm working on a new generator, we'll see if I can finish that or not.

The ghost now avoids you, if it has the option of two directions to turn, and it sees you in one of them, it will always turn away. This gets rid of the simplest "stand still and win" scenarios.

The ghost has footsteps, and they fade out as it gets farther away from you.

You can now gain speed by buffering turns.