Bugfixes, graphical improvements and balance tweaks.

Added eye brightness slider to paint 2 New music tracks Discs now explode if they hit the same enemy twice Many enemies have better engine trails Delete build buttons are now in the save menu instead of load Bosses spawn further apart in multi boss fights Fixed bug where getting hit by a giant laser would break postprocessing Longer engine trails on player Using menus with a controller has been sped up A few enemy types are now better at flanking (they now approach diagonally unless they're behind you) Small performance improvements when large numbers of enemies are on the map Fixed some minor minimap glitches