Implemented 12 new functions
Implemented 12 new functions

* GetRelatedChanges
* GetDraft
* GetComment
* GetSubmitType
* GetRevisionActions
* GetCommit
* GetReview
* GetMergeable
* ListRevisionDrafts
* ListRevisionComments
* ListFiles
* ListFilesReviewed

andygrunwald/diffy,andygrunwald/go-gerrit