Release 19 branch lts deprecation (#5673)

* Updated Project and DevProject to 2020.3 LTS.

* Updated supported LTS version to 2020.3.

* Updated changelog.

* Bumped up CI Unity version from 2020.2 to 2020.3.

* Update CHANGELOG.md

* Removing VS Studio dependency from manifest.json.

* Update packages-lock.json

Author: miguelalonsojr

.yamato/com.unity.ml-agents-optional-dep-tests.yml

@@ -1,13 +1,13 @@
 optional_deps:
     - name: Analytics
       project: "OptionalDepedencyTests/NoAnalyticsModule"
-      version: 2020.2
+      version: 2020.3
     - name: Physics
       project: OptionalDepedencyTests/NoPhysicsModule
-      version: 2020.2
+      version: 2020.3
     - name: Physics2D
       project: OptionalDepedencyTests/NoPhysics2DModule
-      version: 2020.2
+      version: 2020.3
 ---
 
   {% for optional_dep in optional_deps %}

.yamato/com.unity.ml-agents-pack.yml

@@ -7,7 +7,7 @@ pack:
   commands:
     - |
       python3 -m pip install unity-downloader-cli --index-url https://artifactory.prd.it.unity3d.com/artifactory/api/pypi/pypi/simple --upgrade
-      unity-downloader-cli -u 2019.4 -c editor --wait --fast
+      unity-downloader-cli -u 2020.3 -c editor --wait --fast
       ./.Editor/Unity -projectPath Project -batchMode -executeMethod Unity.MLAgents.SampleExporter.ExportCuratedSamples -logFile -
       npm install upm-ci-utils@stable -g --registry https://artifactory.prd.cds.internal.unity3d.com/artifactory/api/npm/upm-npm
       upm-ci project pack --project-path Project

.yamato/com.unity.ml-agents-performance.yml

@@ -1,6 +1,6 @@
 test_editors:
-  - version: 2019.4
-  - version: 2020.2
+  - version: 2020.3
+  - version: 2021.2
 ---
 {% for editor in test_editors %}
 Run_Mac_Perfomance_Tests{{ editor.version }}:

.yamato/com.unity.ml-agents-test.yml

@@ -1,10 +1,10 @@
 {% metadata_file .yamato/coverage_tests.metafile %}
 test_editors:
-    - version: 2019.4
+    - version: 2020.3
         # We want some scene tests to run in the DevProject, but packages there only support 2020+
       testProject: Project
       enableNoDefaultPackages: !!bool true
-    - version: 2020.2
+    - version: 2020.3
       testProject: DevProject
       enableNoDefaultPackages: !!bool true
     - version: 2021.2

.yamato/coverage_tests.metafile

@@ -1,5 +1,5 @@
 coverage_test_editors:
-    - version: 2020.2
+    - version: 2020.3
       testProject: DevProject
 
 coverage_test_platforms:

.yamato/standalone-build-webgl-test.yml

@@ -1,4 +1,4 @@
-{% capture editor_version %}2020.2{% endcapture %}
+{% capture editor_version %}2020.3{% endcapture %}
 test_webgl_standalone_{{ editor_version }}:
   name: Test WebGL Standalone {{ editor_version }}
   agent:

.yamato/test_versions.metafile

@@ -3,7 +3,7 @@
 # For each "other" test, we only run it against a single version of the
 # editor to reduce the number of yamato jobs
 test_editors:
-  - version: 2019.4
+  - version: 2020.3
     extra_test: gym
   - version: 2020.3
     extra_test: sensor

.yamato/training-backcompat-tests.yml

@@ -1,6 +1,6 @@
 
-test_mac_backcompat_2019.4:
-  {% capture editor_version %}2019.4{% endcapture %}
+test_mac_backcompat_2020.3:
+  {% capture editor_version %}2020.3{% endcapture %}
   {% capture csharp_backcompat_version %}1.0.0{% endcapture %}
   # This test has to run on mac because it requires the custom build of tensorflow without AVX
   # Test against 2020.1 because 2020.2 has to run against package version 1.2.0

Project/Packages/manifest.json

@@ -5,7 +5,7 @@
     "com.unity.ml-agents": "file:../../com.unity.ml-agents",
     "com.unity.ml-agents.extensions": "file:../../com.unity.ml-agents.extensions",
     "com.unity.nuget.newtonsoft-json": "2.0.0",
-    "com.unity.test-framework": "1.1.24",
+    "com.unity.test-framework": "1.1.29",
     "com.unity.toolchain.macos-x86_64-linux-x86_64": "0.1.20-preview",
     "com.unity.ugui": "1.0.0",
     "com.unity.modules.imageconversion": "1.0.0",

Project/Packages/packages-lock.json

@@ -65,7 +65,7 @@
       "depth": 0,
       "source": "local",
       "dependencies": {
-        "com.unity.ml-agents": "2.1.0-exp.1",
+        "com.unity.ml-agents": "2.2.0",
         "com.unity.modules.physics": "1.0.0"
       }
     },
@@ -93,7 +93,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.test-framework": {
-      "version": "1.1.24",
+      "version": "1.1.29",
       "depth": 0,
       "source": "registry",
       "dependencies": {
@@ -163,6 +163,18 @@
       "depth": 0,
       "source": "builtin",
       "dependencies": {
+        "com.unity.modules.ui": "1.0.0",
+        "com.unity.modules.imgui": "1.0.0",
+        "com.unity.modules.jsonserialize": "1.0.0",
+        "com.unity.modules.uielementsnative": "1.0.0"
+      }
+    },
+    "com.unity.modules.uielementsnative": {
+      "version": "1.0.0",
+      "depth": 1,
+      "source": "builtin",
+      "dependencies": {
+        "com.unity.modules.ui": "1.0.0",
         "com.unity.modules.imgui": "1.0.0",
         "com.unity.modules.jsonserialize": "1.0.0"
       }