32blit version of Pacman

Warning:

Requires 32blit Timer::pause() support. See my fork

If that changes isn't merged in I'll patch this requirement out.

More a learning exercise than anything. Now a playable game mimicking most of the ghost behaviour, except Cruise Elroy.

Thanks to:

32blit aka Pimoroni

And these three analyses of Pacman:

Game Internals - Understanding Pac-Man Behavior

The Pac-Man Dossier

Don Hodges - The Pink Explanation

Button "A" (z on my keyboard) starts the game/levels/game over as it stands now. It's still not very efficient.