14.0 release

bumped pettingzoo to 1.13.1

Merge branch 'master' of github.com:PettingZoo-Team/PettingZoo

fix deprication versions

missed info

bumped pettingzoo version to 1.9.0

Merge pull request Farama-Foundation#377 from PettingZoo-Team/multiwa…

…lker_bugfix

Fixed multiwalker crashing on completion issue

bumped version to 1.8.1

bumped pettingzoo to 1.8.0