The emulator currently has no graphics support. [Pyglet](https://bitbucket.org/pyglet/pyglet/wiki/Home) and [PySDL2](https://bitbucket.org/marcusva/py-sdl2) both seem to fit the bill, and they support sound. Support should also be added to the MMU for the memory-mapped IO regions that affect the GPU. Tests should be added too, of course.
