Thanks. I really want to wanted to like Phabricator, but every interaction with arcanist just feels like hitting the "I'm feeling lucky" button. It completely

Thanks. I really want to wanted to like Phabricator, but every interaction with arcanist just feels like hitting the "I'm feeling lucky" button. It completely violates the principle of least surprise. To me, at least. My new team is using Github. Can Github be wrangled to enforce a rebase-on-merge workflow with PRs? I am committed to keeping the "one commit per idea" mantra, but I don't see any way in Github to enforce "no-merge commits." Does Github keep track of comments across PRs if they are rebased? I don't want to see extra commits on top of PRs that consist of things like "address reviewer A's comments," but I do want the comments tracked on Github. Is this possible?