- README, LICENSE
- flip normal vectors?
- render all parts of the cow
- bouncy!
- mouse/keyboard interaction
- basic command line args

variants:
- zoom over a grid landscape of cows which are watching you
- wiremesh rendering
- N-body problems
- "skinless" mode

later:
- merge entire cow into a single vertexbuffer (including color)
- abstract util stuff into a helper library