Support for hints

This update gives you the chance to see how long is the longest word you can compose with the current layout and, if you're really stuck, you can also see the actual word (but this disables the replay key because that'd be cheating, wouldn't it?)

To activate the length hint, tap four times quickly on the Big Dark Bar at the bottom of the screen

and the hint will appear up top:


If you tap six times, the length hint will be replaced by the actual word (figuring out how to build it is left as an exercise to the reader, so not really suitable for Rush mode)

Note: Numrush has no hint, because it wouldn't make any sense