* Removed maintenance script dumpSisterSites.php.
* DatabaseBase class constructors must be called using the array argument style.
Ideally, DatabaseBase:factory() should be used instead in most cases.
+* Deprecated ParserOutput::addSecondaryDataUpdate and ParserOutput::getSecondaryDataUpdates.
+ This is a hard deprecation, with getSecondaryDataUpdates returning an empty array and
+ addSecondaryDataUpdate throwing an exception. These functions will be removed in 1.26,
+ since they interfere with caching of ParserOutput objects.
+* Introduced new hook 'SecondaryDataUpdates' that allows extensions to inject custom updates.
== Compatibility ==