Update package and communicator versions to 0.11

UnitySDK/Assets/ML-Agents/Scripts/Academy.cs

         "docs/Learning-Environment-Design-Academy.md")]
     public abstract class Academy : MonoBehaviour
     {
-        private const string k_ApiVersion = "API-10";
+        private const string k_ApiVersion = "API-11";
 
         /// Temporary storage for global gravity value
         /// Used to restore oringal value when deriving Academy modifies it

gym-unity/setup.py

 from setuptools import setup, find_packages
 from setuptools.command.install import install
 
-VERSION = "0.11.0.dev0"
+VERSION = "0.11.0"
 
 
 class VerifyVersionCommand(install):

ml-agents-envs/mlagents/envs/environment.py

         atexit.register(self._close)
         self.port = base_port + worker_id
         self._buffer_size = 12000
-        self._version_ = "API-10"
+        self._version_ = "API-11"
         self._loaded = (
             False
         )  # If true, this means the environment was successfully loaded

ml-agents-envs/setup.py

 from setuptools import setup
 from setuptools.command.install import install
 
-VERSION = "0.11.0.dev0"
+VERSION = "0.11.0"
 
 here = os.path.abspath(os.path.dirname(__file__))
 

ml-agents/setup.py

 from setuptools import setup, find_namespace_packages
 from setuptools.command.install import install
 
-VERSION = "0.11.0.dev0"
+VERSION = "0.11.0"
 
 here = os.path.abspath(os.path.dirname(__file__))