Merge remote-tracking branch 'origin/develop' into develop

appveyor.yml

@@ -37,6 +37,11 @@ cache:
 pull_requests:
   do_not_increment_build_number: true
 
+on_failure:
+  - ps: Get-ChildItem .\_artifacts\*.zip | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - ps: Get-ChildItem .\_artifacts\*.exe | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+  - ps: Get-ChildItem .\_artifacts\*.tar.gz | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
+
 only_commits:
   files:
     - src/