Browser extension that simplifies the GitHub interface and adds useful features

[…]

Highlights

  • Mark issues and pull requests as unread
  • No more jumps caused by recently pushed branches
  • Reaction avatars showing who reacted to a comment
  • The option to wait for checks when merging a PR
  • Clickable references to issues and pull requests
  • Links to an issue’s closing commit or pull request

Source: sindresorhus/refined-github

Seems really nice so far. I’ve noticed the copy-paste stuff doesn’t (always?) work on Firefox though.