GitHub can now enforce linear history

Hi,

I believe this following restriction for protected branches has been added recently on GitHub:

Require linear history
Prevent merge commits from being pushed to matching branches.

I guess this will be useful to enabled that for master branch of llvm-project.

Bests,
Paweł

Hi Pawel,

Thanks for the note!

This is enabled since day 1 of the move to GitHub.

Best,