GitHub invokes spirit of Phabricator with preview of Stacked PRs

GitHub has previewed Stacked PRs, a feature enabling pull requests to be organized in dependent stacks where each PR can be reviewed and merged independently or as a group. The feature solves a long-standing workflow problem: developers waiting for dependent code to be reviewed before proceeding must either delay work or create large, hard-to-review PRs. Stacked PRs encourage smaller, discrete logical units of work.