* (bug 47219) Allow specifying change type of Wikipedia feed items
* prop=imageinfo now allows setting iiurlheight without setting iiurlwidth
* prop=info now adds the content model and page language of the title.
-* New upload log entries will now contain information on the relavent
+* New upload log entries will now contain information on the relevant
image (sha1 and timestamp).
* (bug 49239) action=parse now can parse in preview and section preview modes.
* (bug 49259) action=patrol now accepts revision ids.
will no longer be output and OutputPage::addKeyword no longer exists.
* Methods Title::userCanEditCssSubpage and Title::userCanEditJsSubpage,
deprecated since 1.19, have been removed.
+* (bug 50134) Hook functions are no longer required to return a value. When a
+ hook function does not return a value (or when it returns an explicit null),
+ processing continues. To abort the hook, a hook function must return an
+ explicit, boolean false or a string error message. Other falsey values are
+ tantamount to a 'return true' in earlier versions of MediaWiki.
== Compatibility ==