Rebase & merge

By: Piotr Kaminski

You can now rebase and merge a branch in Reviewable just like in GitHub, as long as there are no conflicts:

This supersedes the previous "fast forward" option, though Reviewable will still indicate to you whether the rebase would, in fact, be a no-op.

Also, control over what merge styles are available in your repo is now fully ceded to GitHub since they've made the flags available via the API.