Update doc

Use app slug instead of the app name in comments

Better security and UX (#82)

- Use the state parameter when auth'ing to validate source
- Update comment wording
- Show success page before redirecting user
- Add pull request link to auth url for redirection back to PR
- Refactor: Extract some commonly used variables

Update feature request labels

Remove reaction approval (#77)

* Remove reaction approval

* More cleanup

Update README.md

Update README.md

Delete the refresh token at the end

Add nbsp after the heart in the footer

It looked weird before

Set fetch depth