CanvasQuest update: maps, collisions, events!

I just added some big time features to CanvasQuest. Maps are now constructed via a js object instead of "hard coded". Collision detection is working now between walls and monsters/character. There is a rudimentary events system. You can walk over to the treasure chest and see a message, as well as walking to the exit door. Things are progressing nicely.

Next up is a battle system, gold, and life/death.