Changing to decorators and private variables.
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
Merge remote-tracking branch 'bernhard/master'

Conflicts:
	Set.py
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
added a simple timer that shows a hint after 10 seconds'
Fixes the lack of hint showing up on the second page
Merge branch 'hint' of https://github.com/JeromeLefebvre/SetGame into JeromeLefebvre-hint

Conflicts:
	screen.kv
	screen.py
Update scree
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
improve layout
Merge pull request #38 from JeromeLefebvre/styling

JeromeLefebvre:styling
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
ignore temporary py files
A semi functional title page
Merge pull request #39 from cbruni/master

The boss
adding basic tutorial functionality
Merge pull request #40 from ChristinaLK/tutorial

adding basic tutorial functionality
attaching images to cards
Merge branch 'master' of https://github.com/BernhardKonrad/SetGame
Merge pull request #41 from JeromeLefebvre/master

JeromeLefebvre:master