+* Removed configuration option $wgCopyrightIcon (deprecated since 1.18). Use
+ $wgFooterIcons['copyright']['copyright'] instead.
+* ApiMain::getShowVersions() was removed (deprecated in 1.21).
+* ApiMain::addModule() was removed (deprecated in 1.21).
+* ApiMain::addFormat() was removed (deprecated in 1.21).
+* ApiMain::getFormats() was removed (deprecated in 1.21).
+* ApiPageSet::finishPageSetGeneration() was removed (deprecated in 1.21).