* Allowing text file clues to be loaded (instead of only images). The formatting is still rather strict, but without knowing use-cases I can't really make it any better (I'm open to suggestions). This was only really added as an easy consequence to crossword generation anyway.
* Fixing a "small" bug that caused an error screen to appear when you saved over a previous save. It still saved, and changing tab clears the error screen, so it wasn't bad from a functionality pint of view. It was just bad from a user experience point of view instead.
* Previously, the number-selectors would eat vertical scroll inputs for some reason. They don't anymore (so you can now scroll if the sudoku grid is too big).
* Changing the clear and mode-toggle buttons to be side-by-side.
* Removing a few unneeded dividers.
* Making the number-selectors slightly quicker, and the hold-buttons a lot quicker.
