Last call before release of rdiff-backup 2.0.0

[EricZolf]

Hi,

as I write these lines, the last MR closing the last issue marked for
milestone 2.0.0 is being tested (it'll deploy automatically the release
to PyPI, yeah!).

Before this can become reality, a few things need to happen:

1. someone needs to review my 4 PRs at [1] - I can merge myself but I
can't review myself (well, I don't want to)
2. @zjw - you have 2 MRs waiting for updates after review - I'd like to
take them with this release. When are you able to address them?
3. @ottok - similar question for [2] - we currently have inconsistently
versioned Debian packages.
4. anybody needs to test, test, test! At this stage, we'll address only
critical bugs not already present in 1.2.8.

Thanks everybody for your support, we're almost there,
Eric

[1] https://github.com/rdiff-backup/rdiff-backup/pulls
[2] https://github.com/rdiff-backup/rdiff-backup/issues/252