Turning in MP4#21

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esundsmo wants to merge 5 commits intosd16spring:masterfrom

esundsmo:master

Commits on Mar 5, 2016

brick collisions needed, both ball and paddle collide with walls
rebeccapatterson
committed

Commits on Mar 8, 2016

Commits on Mar 9, 2016

Turning in MP4
rebeccapatterson
committed