* Add unit tests IsAuthenticated
* Add unit tests RepoExists
* Add unit tests GetContents
* Add initial unit tests GetTree
* Add unit tests for CreateFile
* Add unit test UpdateFile
* Add unit tests DeleteFile
* Add unit tests for Commits
* Add unit tests for helpers
* Add unit test CompareCommits
* Add GetBranch tests
* Add unit tests BranchExists and CreateBranch
* Add unit tests Webhooks
* Remove unused code
* Add unit tests CommentPullRequest
* Add more cases for GetTree
* Complete coverage
* Fix linting