some unknown changes
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
solved a conflict
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
unknown changes
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
add a popup for player selection
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame

Conflicts:
	main.py
	screen.kv
Merge pull request #62 from jiag/master

add a popup for multiplayers