tennis config

config/trainer_config.yaml

     time_horizon: 1000
     self_play:
         window: 10
-        play_against_current_best_ratio: 0.5
+        play_against_current_best_ratio: 0.2
         save_steps: 50000
         swap_steps: 50000
         team_change: 100000
         window: 100
         play_against_current_best_ratio: 0.2
         save_steps: 50000
-        swap_steps: 100000
+        swap_steps: 50000
         team_change: 200000
 
 CrawlerStatic: