let's try to kill the thread right away and protect the thread variable with a mutex
I see no reason why a visual effect needs Distance. IMO square should look just fine. Untested. Oh. Also reduced flake count at Randi's request.
CASE FOLDING!!!
Never ever commit files with the same name and different casing
fix for
issue #599: "Change graphics size settings to use qspinbox"? somebody ask unC0Rr if that's what he wanted :p
implementation of a restart-game button. location and appearance is not final :P