Merge pull request #46 from JoseLuisC99/new-pettingzoo-api-call

Fixed broken restart compatibility with the PettingZoo API

magent2/environments/magent_env.py

@@ -165,7 +165,7 @@ def reset(self, seed=None, return_info=False, options=None):
         self.frames = 0
         self.team_sizes = [self.env.get_num(handle) for handle in self.handles]
         self.generate_map()
-        return self._compute_observations()
+        return self._compute_observations(), {agent: {} for agent in self.agents}
 
     def _compute_observations(self):
         observes = [None] * self.max_num_agents