To do:

 - work on usability and robustness of control system
 	- refine state machine
		- automatically do "next" on "bank_to_x" operation
		- automatically do "next" on "show_value_x" operation
			- hide "next"
		
 - refine game details
	- add timer for questions
	- add auto-refresh??

 - add sounds
	- sound for strike - buzzer
	- sound for correct answer - applause/rejoicing
	- sound for chiming in - ding
		- no need if we have a bell
 - add music
	- opening music - family feud
