end round & winner selection after timer runs out.
code style
clean up the round before next, if no one played during round
remove players from the game after 3 inactive rounds
make sure that picks different cards if more than one required
bugfix: ignore play if player not in game
handle players' nick changes, parts & quits
Merge branch 'feature/turn-timeouts' into develop
Merge branch 'develop'
version bump to 0.2.0