set communication to 1.0.0 (#3896)

com.unity.ml-agents/Runtime/Academy.cs

     {
         /// <summary>
         /// Communication protocol version.
-        /// When connecting to python, this must match UnityEnvironment.API_VERSION.
-        /// Currently we require strict equality between the communication protocol
-        /// on each side, although we may allow some flexibility in the future.
-        /// This should be incremented whenever a change is made to the communication protocol.
+        /// When connecting to python, this must be compatible with UnityEnvironment.API_VERSION.
+        /// We follow semantic versioning on the communication version, so existing
+        /// functionality will work as long the major versions match.
+        /// This should be changed whenever a change is made to the communication protocol.
-        const string k_ApiVersion = "0.17.0";
+        const string k_ApiVersion = "1.0.0";
 
         /// <summary>
         /// Unity package version of com.unity.ml-agents.

ml-agents-envs/mlagents_envs/environment.py

     SINGLE_BRAIN_ACTION_TYPES = SCALAR_ACTION_TYPES + (list, np.ndarray)
 
     # Communication protocol version.
-    # When connecting to C#, this must match Academy.k_ApiVersion
-    # Currently we require strict equality between the communication protocol
-    # on each side, although we may allow some flexibility in the future.
-    # This should be incremented whenever a change is made to the communication protocol.
-    API_VERSION = "0.17.0"
+    # When connecting to C#, this must be compatible with Academy.k_ApiVersion.
+    # We follow semantic versioning on the communication version, so existing
+    # functionality will work as long the major versions match.
+    # This should be changed whenever a change is made to the communication protocol.
+    API_VERSION = "1.0.0"
 
     # Default port that the editor listens on. If an environment executable
     # isn't specified, this port will be used.