* New key added to $wgGalleryOptions - $wgGalleryOptions['mode'] to set
default gallery mode.
* New hook 'GalleryGetModes' to allow extensions to make new gallery modes.
+* The checkbox for staying in HTTPS displayed on the login form when $wgSecureLogin is
+ enabled has been removed. Instead, whether the user stays in HTTPS will be determined
+ based on the user's preferences, and whether they came from HTTPS or not.
=== New features in 1.22 ===
* (bug 44525) mediawiki.jqueryMsg can now parse (whitelisted) HTML elements and attributes.
* (bug 49694) $wgSpamRegex is now also applied on the new section headline text
adding a new topic on a page
* (bug 41756) Improve treatment of multiple comments on a blank line.
+* (bug 51064) Purge upstream caches when deleting file assets.
+* (bug 39012) File types with a mime that we do not know the extension for
+ can no longer be uploaded as an extension that we do know the mime type
+ for.
=== API changes in 1.22 ===
* (bug 25553) The JSON output formatter now leaves forward slashes unescaped