Artifacts not published to GitHub releases

[sideeffffect]

The releases pages on GitHub, eg
https://github.com/scala/vscode-scala-syntax/releases/tag/0.3.9
https://github.com/scala/vscode-scala-syntax/releases/tag/0.1.0
don't contain the build artifact, like scala-lang.scala-0.3.9.vsix and scala-lang.scala-snippets-0.1.0.vsix, uploaded and viable there

the vsix files is only available via Microsoft's Marketplace
https://marketplace.visualstudio.com/_apis/public/gallery/publishers/scalameta/vsextensions/metals/1.7.2/vspackage

That is not a viable source for other IDEs.
The scala-lang.scala and scala-lang.scala-snippets vsix files have to be available somewhere else, GitHub releases is probably the best place, so that Metals is officially included in Eclipse Che web IDE.
eclipse-che/che-plugin-registry#356

Related issue: https://github.com/scalameta/metals/issues/1365

[sideeffffect]

Uploading the artifacts from Travis should be easy
https://docs.travis-ci.com/user/deployment/releases/

[sideeffffect]

@nicolasstucki could you please have a look at this? it's blocking accepting Scala in Eclipse Che

[nicolasstucki]

I'm a bit swamped this next week. @anatoliykmetyuk could you have a look?

[nicolasstucki]

@sideeffffect I added manually the artifact to https://github.com/scala/vscode-scala-syntax/releases/tag/0.3.9

[sideeffffect]

That's great news, but I don't see it available for the newest release, like 0.3.11. What went wrong?