thoughtbot/hound — pull request #295 by malandrina (2014-06-20 22:36:57+00:00)
Title: Don't duplicate comments after force push

* Remove `Comment` model
* Update `Commenter` and `CommentingPolicy`:
- Check for previous comments on pull request
- If a comment reporting a violation for a given line has already been
made, do not add a comment reporting the same violation
* Add `GithubApi#pull_request_comments` and `PullRequest#comments`
methods for fetching and accessing pull request comments
* https://trello.com/c/ha2hgFj2/283-avoid-commenting-a-second-time-after-a-force-push