+* (bug 32552) Drop unused database field cat_hidden from table category.
+* (bug 24502) Do not allow multiple language links to the same language.
+* (bug 40214) Category pages no longer use deprecated "width" HTML attribute.
+* (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.