* The global function wfOutputHandler() was removed, use the its replacement
MediaWiki\OutputHandler::handle() instead. The global function was only sometimes defined.
Its replacement is always available via the autoloader.
+* ChangeTags::listExtensionActivatedTags and ::listExtensionDefinedTags, deprecated
+ in 1.28, have been removed. Use ::listSoftwareActivatedTags() and
+ ::listSoftwareDefinedTags() instead.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,