dotsnboxes almost works, still needs smarter placing of strokes
clearing background when finished
first working version of dotsnboxes
updated gameGrid library, adapted dotsboxes
lots of refactors, some documentation
changed status text to clarify score, grid size is choosable
added visible boarder to strokes
introduced changes suggested by ap: "more interactivity"
made grid bigger, reworked some methods into Player class
sources of new ultraschall sim added
not sure if needed
implemented some kind of end of game message
fixed bug of overdrawing old strokes, introduced case statement for pretty