Backport: A CLI to automate backporting of commits on a GitHub repo

I really love this tool - We use it to backport commits from master to our older release branches on the Kibana project. I can't emphasize enough how many hours this saves us every week.

It creates a PR for each backport you make and label them "backport", so you can easily see them all here: https://github.com/elastic/kibana/pulls?q=is%3Apr+is%3Aopen+...