+* LCStoreAccel was removed. $wgLocalisationCacheConf can no longer be set to
+ use this store class.
+* Html::infoBox() no longer accepts paths relative to skins/common/images/.
+* Deprecated defunct Skin::getCommonStylePath().
+* Some extensions had their ResourceLoader modules depend on the "mediawiki"
+ and "jquery" modules. In the past, this behavior was undefined, now it will
+ throw an error.
+* Removed BagOStuff::replace(). (deprecated since 1.23)