(case 1255312) Conditionally use different namespace for ScriptedImporters (#4187)

* Update barracuda version to 1.0.1.
* Fix multiplayer package issue.
* Update changelog.
* Bump ml-agents package version to 1.0.3.

DevProject/Packages/manifest.json

     "com.unity.ide.rider": "1.1.4",
     "com.unity.ide.vscode": "1.1.4",
     "com.unity.ml-agents": "file:../../com.unity.ml-agents",
-    "com.unity.multiplayer-hlapi": "1.0.4",
+    "com.unity.multiplayer-hlapi": "1.0.6",
     "com.unity.package-manager-doctools": "1.1.1-preview.3",
     "com.unity.package-validation-suite": "0.7.15-preview",
     "com.unity.purchasing": "2.0.6",

com.unity.ml-agents/CHANGELOG.md

 and this project adheres to
 [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.0.3] - 2020-07-07
+### Minor Changes
+#### com.unity.ml-agents (C#)
+- Update Barracuda to 1.0.1. (#4187)
 ### Bug Fixes
 #### com.unity.ml-agents (C#)
 - Fixed an issue where RayPerceptionSensor would raise an exception when the

com.unity.ml-agents/Editor/DemonstrationImporter.cs

 using Unity.MLAgents.CommunicatorObjects;
 using UnityEditor;
 using UnityEngine;
+#if UNITY_2020_2_OR_NEWER
+using UnityEditor.AssetImporters;
+#else
+#endif
 using Unity.MLAgents.Demonstrations;
 
 namespace Unity.MLAgents.Editor

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

         /// Unity package version of com.unity.ml-agents.
         /// This must match the version string in package.json and is checked in a unit test.
         /// </summary>
-        internal const string k_PackageVersion = "1.0.2";
+        internal const string k_PackageVersion = "1.0.3";
 
         const int k_EditorTrainingPort = 5004;
 

com.unity.ml-agents/package.json

 {
   "name": "com.unity.ml-agents",
   "displayName": "ML Agents",
-  "version": "1.0.2",
+  "version": "1.0.3",
-    "com.unity.barracuda": "1.0.0"
+    "com.unity.barracuda": "1.0.1"
   }
 }