=== New features in 1.26 ===
* Change tags can now be hidden in the interface by disabling the associated
"tag-<id>" interface message.
+* ':' (colon) is now invalid in usernames for new accounts. Existing accounts
+ are not affected.
==== External libraries ====
and it's derivative classes (everything in core). For Content types that
do not support direct editing, an alternative mechanism should be provided
for editing, such as action overrides or specific api modules.
+* mediaWiki.confirmCloseWindow now returns an object of functions, instead of
+one function. The callback can't be called directly any more. The callback function
+is replaced with confirmCloseWindow.release().
+* Removed maintenance script deleteImageMemcached.php.
== Compatibility ==