In SimpleGameLogic, on GAME_OVER also recording one next block after all other
events. This is causing problems right now, but I know how to fix and am
working on it. The problem is that the act of asking for the next block, for
purposes of recording to stream, is causing the next block display to be
changed automatically. Solution is to augment LevelFinishedCausesNullNextBlock
a little bit, perhaps even changing its name.
