New release - $30 or $50 option

A new release of SwingState includes:

-A $30 game option in addition to the $50 option for a full game.  The $30 option should make a full game playable in 10 minutes or so. The $50 option will take closer to 20 minutes.

-Challenge options improved - At each challenge during the election cycle, there's an actions button offering to campaign in individual states or to play a card. Hopefully this provides the player a good look at all of the options available at each stage.

-A sound checkbox at the start.

-A fix for the new game sequence bug which caused extraneous games to be created.