Post-processing effects

[TheNexusAvenger (Nexus)]

Just so everyone knows, my slider is updated to be 50% smaller.

@TheNexusAvenger

Sorry to bump, but at the request of @zeuxcg, I just made the GUI smaller (50% smaller on X axis, 5% on Y for anyone who wants specifics).

Edit:
Also, Anti-Aliasing support should be pretty cool to have. I may have integrated graphics on a 4th generation Core i5, but it works.

Any particular AA type you guys use?