Add a file tree to GitHub Pull Requests

Make GitHub Pull Requests better with a file tree view and other UX improvements

- Browse pull requests with an IDE like file tree
- Private repositories support out of the box
- GitHub Enterprise support
- Other goodies: review viewed files, resizable tree, expand to full width and more

This is an open-source community project and is in no way affiliated or endorsed by GitHub.

For suggestions, issues and contribution, see https://github.com/berzniz/github_pr_tree"