Big balls and black backgrounds (v6 patch 3)

v6, patch 3

Fixes

- Putting a mushroom in your dick now puffs both of your balls correctly

- Character art appeared black on the LibreWolf browser and some android phones. It might now be fixed.

- - Spritesheets are split into many 2048x2048 spritesheets now, instead of going up to 11,000 pixels. Because of this, image loading may be slightly slower because it has to load metadata before it knows how many spritesheets to load, which means two round trips minimum for character loading. In future maybe the metadata will all be loaded initially, to avoid this, and spritesheets may be dynamically split on the client to keep the payload in one file.

- - Watch for if this introduced a bug in the character loading/eviction system.