Removed superfluous import
Fixed import read-only for Samurai
Added hints (tricks) to CLI output - currently just markUp
Improved the generation algorithm. 

Inner, top left, bottom left, top right, bottom right.
Changed printout algoritm in preparation for Super Sudoku
Fixed cell selection problem
works halfway, needs better borders
Better, now with borders in the right place.
Change color of selected cells - first step towards highlighting 
incorrect entries.
Can set font now. Not distinuishing between read-only and editable yet.
Now I can show incorrect entries in color
More progress on Cell editing. Still cannot highlight current cell