Add release notes for Review Board 2.0.24.
Review Request #8210 — Created June 2, 2016 and submitted — Latest diff uploaded
This covers the fixes to GitLab, Subversion 1.9 diffs, Mercurial, and other fixes, plus the addition of CodebaseHQ.com support for Review Board 2.0.x.
Built the docs and looked through them.
Tested all bug links to make sure they pointed to the right ticket.