Merge branch 'config-and-serialization'
Compute collision normals for more accurate bounces

Some trajectories are still reversed, but angles now look correct for side collisions.
Merge branch 'master' of https://github.com/VideoBleep/bleepout
Correct ball bounces
Prettier initial test state
Ignore static-static collisions
Ignore dead objects in collision detection and rendering
More subtle trajectory rendering mode
Render banner messages
Cool 1980s text trails
Cosmetic tweaks to renderer scene setup
cleaning out unused junk
removing more unused stuff
more cleanup, also fixing the build breakage that i caused
removed unused player color configuration
Restore missing else clause
Only balls with a player assigned should destroy bricks
Test walls with increasing awesomeness
Color balls with player color
Reduce ball speed