If the field is cleared of fixed bubbles when goingUp() bubbles are still in motion, the player wins

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I am unsure if this is undesirable behavior or not.

The effect is that bubbles will become fixed to the grid showing a non-empty 
playfield after the player just cleared the grid - but the player technically 
accomplished the goal of freeing all the bubbles.  I guess this could be 
denoted a cheesy win, sort of like winning when the opponent has half their 
game field clear but for whatever reason a "spike" of bubbles reached the 
bottom.

This would be simple to change - simply don't allow a win while goingUp() 
bubbles are present.

Original issue reported on code.google.com by forter...@gmail.com on 9 May 2014 at 12:26