Unrelated Diffs on a PR

[ScottBishop]

Unrelated diffs due to your branch being behind the base branch can be annoying. You know that they are unrelated but to confirm, you can pull the base branch into your branch, run again, and get a clean build.

Notify the user to pull the base branch into your branch, and run CI again.

On build create: send a slack message to user if there are other PRs that have been merged (that are ahead of you on the branch build), and also have approved diffs. These are the builds that will cause unrelated diffs. Provide the link to the CI build that should be killed, and rerun.

• bonus look into a way to automatically pull develop/rerun