ZD and reinforced learning strategies
update
Merge remote-tracking branch 'upstream/master'

Conflicts:
	leaderboard.py
	tournament.py
complete basic version
Added module for strategy creation. Strategies act on last move + given set of probabilites.
Removed typo
Merge pull request #4 from chrishd/master

testing.py + run-all-combos.py
Merge pull request #5 from CursedHD/master

ZD and reinforced learning for prison
Merge pull request #6 from babibu/master

Neue Strategien schnell erzeugen
useless commit - disregard.
solved conflict

Conflicts:
	strategies/chris.py
added 2 titfortat modifications, small update for run-all-combos.py