Comment 3 for bug 1522153

Reviewed: https://review.openstack.org/254372
Committed: https://git.openstack.org/cgit/openstack/reno/commit/?id=4b45743e496b861d1adf0959e00e846740d58edf
Submitter: Jenkins
Branch: master

commit 4b45743e496b861d1adf0959e00e846740d58edf
Author: Doug Hellmann <email address hidden>
Date: Mon Dec 7 20:18:41 2015 +0000

    fix notes appearing in releases older than they should

    Use topological sort instead of date sort so that release notes appear
    in the release where they are merged, rather than the one closest to the
    same commit time, which might be much older.

    In order to support listing tags on versions of git with different
    output formats, we also limit the tags we care about to things that look
    like version numbers (some sequence of digits, dots, and maybe "a" or
    "b" for alpha & beta).

    Change-Id: I95278eab25f331262a4c9eeac2260ca7290b5421
    Closes-Bug: #1522153