Add release notes for Review Board 3.0.15.
Review Request #10587 — Created June 11, 2019 and submitted — Latest diff uploaded
This is an important bug fix release that fixes support for Bitbucket
(due to the removal of an API). It also contains fixes for avatars
rendering and emojis, saving of access lists for repositories,
validation of the Depends On field, and more.
Built the docs. Checked for build errors, bad links, and spelling