Update. Menu, persistent data, etc.

I was all over the place today, so it is hard to think straight and write this. I've implemented a progression system of sorts. The game should now remember how many mazes you have completed, as the level you are on when you stop playing should be the level you return to. Being honest, this does not mean that the actual maze you left will be the one you return to. Rather, it creates a new maze for you to run, but you don't lose your progress. You can, of course, reset your progress by choosing to play a new game instead of continuing.

That brings me to the next thing. Implementing persistence gave me a reason to add another button to the menu. I am planning on working on adding some settings next. Volume control would be nice.

I added the usual photosensitivity disclaimer to the splash sequence.