Hello! Please go to https://github.com/rdiff-backup/rdiff-backup/pulls and check out the 3 most recent PRs.
The project is currently somewhat stalled by the lack of PR reviewers. Eric has made a couple of PRs but I personally don't have time right now to review them. The project needs more reviewers – at minimum you only need to skim the changes (documentation changes, code changes) and comment something so that Eric does not have to do everything by himself. A big thanks to Eric for being the main developer and reviving rdiff-backup and getting 2.0 released. If there isn't enough support from the subscribers of this mailing list and users of rdiff-backup, Eric might loose interest in maintaining the code. So please step up those who can. Thanks, Otto