AppVeyor testing Windows again and testing OpenPoseDemo

Signed-off-by: NGines Hidalgo <gineshidalgo99@gmail.com>

appveyor.yml

-image: Visual Studio 2017
+image: Visual Studio 2019
 clone_folder: c:\openpose
 
 build_script:
     - mkdir build
     - cd build
-    - cmake -DGPU_MODE=CPU_ONLY -G "Visual Studio 15 2017 Win64" ..
+    - cmake -DGPU_MODE=CPU_ONLY -G "Visual Studio 16 2019" -A x64 ..
     - cmake --build . --config "Release"
 
 after_build:
@@ -27,7 +27,10 @@ after_build:
     - ps: cd artifacts
     - ps: 7z a ..\openpose.zip .
     - ps: cd ..
+    # Test
+    - ps: .\artifacts\bin\openpose.bin --image_dir examples/media/ --net_resolution -1x32 --write_json output/ --write_images output/ --display 0
 
-artifacts:
-    - path: openpose.zip
-      name: OpenPose
+# `artifacts` disabled because of the AppVeyor crash: "Maximum allowed artifact storage size of 50000 Mb will be exceeded."
+# artifacts:
+#     - path: openpose.zip
+#       name: OpenPose

doc/release_notes.md

@@ -435,13 +435,15 @@ OpenPose Library - Release Notes
 1. Main improvements:
     1. Webcam speed boosted on Windows (by updating OpenCV).
     2. Third party versions updated:
-        1. OpenCV: From 4.2 to 4.5.
+        1. OpenCV (Windows): From 4.2 to 4.5.
         2. Eigen: From 3.3.4 to 3.3.8.
-        3. `wget`: From 1.19.1 to 1.20.3.
+        3. `wget` (Windows): From 1.19.1 to 1.20.3.
+    3. AppVeyor now tests the actual OpenPoseDemo.exe example (Windows).
 2. Functions or parameters renamed:
 3. Main bugs fixed:
     1. Eigen working again on Windows.
     2. OpenPose links to the right OpenCV DLL Files on Windows (it was wrongly linking to v14 rather than v15).
+    3. AppVeyor auto-testing working again by disabling artifacts (Windows).