Fix hedgehogs number desync. Now all desyncs except the one from
issue #521 should be fixed. Please, test.
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