Added runtime error handling.

Setting `catchRuntimeErrors` to `true` will enable handling of runtime
errors without stopping the game. Useful for game testing.
updating console and default text
Evening out the fps display.
Visual graphs for timing.
Continued tweaks. Everything works and looks good.
Deleted an unnecessary part (it's tested twice)
Added clearSave function to Data class.
Update Data.as
Per Jacob Albano's suggestion.
Remove filename parameter from Data.clear()