Please add some release notes and document the new step `checkGatingStatus`. I just stumbled over the new step because i look at the last couple of commits, but i have no idea what it does...

As a user i want to know what changed for each release, only with this information I'm able to decide whether i want to upgrade or not.

The Jenkins community also integrated the GitHub Releases into the plugin documentation, you can see an example here: https://plugins.jenkins.io/config-file-provider/#releases