sunday 10/26 several improvements

-only one color starts the game, the other 2 are quickly added
-fixed a bug where some dots where not being destroyed after being
de-pooled
-added an adjustable cap to dot speed

-existing issues: sometimes a powerup spawns with a color, hard to
reproduce
Merge remote-tracking branch 'origin/iago-programming' into taylor-programming

Conflicts:
	Assembly-UnityScript-firstpass-vs.unityproj
	Assembly-UnityScript-firstpass.unityproj
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