Stacked Diffs on GitHub

Jared: "We are sending out a proposal for Stacked Diffs on @GitHub to trusted design partners to gather initial feedback over the next few days. From there we’ll iterate and share the gameplan"

My magical ideal is to be able to do this even without the sender's consent. Let me, as a reviewer, chop up half of someone's PR and then get that sent in, CI'd, approved.