Set up StandingWave3, and added some graphics.

Started using StandingWave3, and added some graphics from OpenGameArt as
placeholder art. The sprite sheet isn't set up correctly yet, but it's
good enough for now. Setting up a basic click track now.
Did a bit of refactoring, still nothing to show.

Continuing to work on sound stuff.
Still working on getting a click track working, which is my next goal.
Did some stuff. Midterms happened.

Real life happened, so if it's kosher I guess this is now my March
submission for #1gam?