It has been on my mind, but it is a major undertaking. The plugin was designed with backward compatibility with Internet Explorer 8 in mind. Therefore it employs techniques that do not lend themself well to responsive design and touch devices.
The second question is a more basic one. A crossword is by its nature a two-dimensional grid whose layout cannot be changed. What should happen if an author designs a large one? Is it scaled down to fit on a small screen, or left at a reasonable size and exeeding the screen limits? What touch gestures would then intuitively distinguish between marking a word and scrolling the view? How would you mark a word that is so long that it does not fit within the screen?
