v0.3: Graphics sorta fixed

I maybe fixed the problem where a few people (on specific Mac laptops, I think?) saw concentric circles of solid color instead of... a moon.

Also, the other problem where a few people (on different laptops??) got extremely pixellated banding is not fixed, but the effect is slightly less bad, maybe.

I know this is a bit late, but without access to any of the affected hardware, the best I can do is guess wildly. Hope this makes the game playable for a couple more people. :)