Fixed screen centering error when the window size is exactly the same as the game size in either dimension.
Added introspection to InputManager and related classes.
Removed commented code in bootstrapper.
Fixed frame-long lag for timed functions (important for higher-speed operation).

Uses a heavy dose of magic (y-combinators), but it should be neat enough... I hope.
Merge branch 'master' of https://github.com/heidi-ann/zygote