Spotlight hints, optimizations, better puzzles

Puzzle generation is significantly faster (10x)

Puzzle generator more actively seeks hidden sets (naked set, hidden set) and incorporates them in to the clue path

Hidden set finding logic vastly improved

Clue selection, with keyboard shortcuts (a: previous clue, d: next clue, c: complete clue, escape: deselect clue)

When getting a hint, we spotlight only relevant tiles to assist in finding the deduction

Name changed to Mind Hunt to comply with Gnome software guidelines

Windows installer script cleaned up