Vsync Option

[ButterSpreadBread720]

I get a ton of jitters while the screen moves, and Vsync should make that silky smooth.

[xordspar0]

The game logic and rendering are currently locked at 50 fps, like in the original Cave Story. isage says:

I think we can atually uncap fps for drawing (which will allow vsunc) while keeping logic/movement running at 50.