* (bug 49694) $wgSpamRegex is now also applied on the new section headline text
adding a new topic on a page
* (bug 6200) line breaks in <blockquote> are handled like they are in <div>
+* (bug 41756) Improve treatment of multiple comments on a blank line.
=== API changes in 1.22 ===
* (bug 25553) The JSON output formatter now leaves forward slashes unescaped