Mark snapshot as prerelease

[bootstraponline]

No description provided.

[inktomi]

Thank you! This will save some people who come and just download the latest release for sure!

[inktomi]

It seems like this might just be something you configure when creating a release. If that's the case, there might not be any work to do.

https://help.github.com/articles/creating-releases/

[bootstraponline]

Flank follows continuous delivery, Bitrise is missing API support:

• Add override support bitrise-steplib/steps-github-release#5 (not implemented)
• Add support for prerelease releases bitrise-steplib/steps-github-release#4 (done)

I have a custom workflow that performs the releases which needs to be updated. It should be a small change. I'll probably look into this after #365 is done

[bootstraponline]

opened: bitrise-steplib/steps-github-release#13

I updated the bitrise workflow to automatically mark the snapshot releases as pre-release.