add VERSION variable to each setup.py

gym-unity/setup.py

 
 from setuptools import setup, find_packages
 
+VERSION = "0.10.1"
+
-    version="0.4.8",
+    version=VERSION,
     description="Unity Machine Learning Agents Gym Interface",
     license="Apache License 2.0",
     author="Unity Technologies",
-    install_requires=["gym", "mlagents_envs==0.10.1"],
+    install_requires=["gym", "mlagents_envs=={}".format(VERSION)],
 )

ml-agents-envs/setup.py

 from setuptools import setup
 from os import path
 
+VERSION = "0.10.1"
+
-    version="0.10.1",
+    version=VERSION,
     description="Unity Machine Learning Agents Interface",
     url="https://github.com/Unity-Technologies/ml-agents",
     author="Unity Technologies",

ml-agents/setup.py

 from os import path
 from io import open
 
+VERSION = "0.10.1"
+
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
 setup(
     name="mlagents",
-    version="0.10.1",
+    version=VERSION,
     description="Unity Machine Learning Agents",
     long_description=long_description,
     long_description_content_type="text/markdown",
         "h5py>=2.9.0",
         "jupyter",
         "matplotlib",
-        "mlagents_envs==0.10.1",
+        "mlagents_envs=={}".format(VERSION),
         "numpy>=1.13.3,<2.0",
         "Pillow>=4.2.1",
         "protobuf>=3.6",