Update Arsenal.py

Added spacing to the OnUnloadGamePlay argument.
Update TournamentDM.py

Removed Cleanup and replaced with OnUnloadGamePlay.
Merge pull request #2 from sipster19/patch-2

Update TournamentDM.py
Merge pull request #1 from sipster19/patch-1

Update Arsenal.py
Merge remote-tracking branch 'github/master' into dev/v4.3