Bump version strings (#3224)

Ervin T · web-flow · commit 0a7977c9153e · 2020-01-15T15:25:52.000-08:00
diff --git a/gym-unity/gym_unity/__init__.py b/gym-unity/gym_unity/__init__.py
@@ -1 +1 @@
-__version__ = "0.13.0"
+__version__ = "0.13.1"
diff --git a/ml-agents-envs/mlagents_envs/__init__.py b/ml-agents-envs/mlagents_envs/__init__.py
@@ -1 +1 @@
-__version__ = "0.13.0"
+__version__ = "0.13.1"
diff --git a/ml-agents/mlagents/trainers/__init__.py b/ml-agents/mlagents/trainers/__init__.py
@@ -1 +1 @@
-__version__ = "0.13.0"
+__version__ = "0.13.1"
