* (bug 39941) Add missing stylesheets to the installer pages
* In HTML5 mode, allow new input element types values (such as color, range..)
* (bug 40353) SpecialDoubleRedirect should support for interwiki redirects.
+* (bug 40352) fixDoubleRedirects.php should support for interwiki redirects.
=== API changes in 1.20 ===
* (bug 34316) Add ability to retrieve maximum upload size from MediaWiki API.
* (bug 11142) Improve file extension blacklist error reporting in API upload.
* (bug 39665) Cache AllowedGenerator array so it doesn't autoload all query classes
on every request.
-* (bug 35693) ApiQueryImageInfo now suppresses errors when unserializing metadata
+* (bug 35693) ApiQueryImageInfo now suppresses errors when unserializing metadata.
=== Languages updated in 1.20 ===