* ParserOutput objects generated using a non-default value for
ParserOptions::setWrapOutputClass() can no longer be added to the parser
cache.
+* The following deprecated methods from the OutputPage class have been removed:
+ * OutputPage::addExtensionStyle(); deprecated in 1.27
+ * OutputPage::getExtStyle(); deprecated in 1.27
+ * OutputPage::setETag(); deprecated in 1.28 (obsolete no-op)
+ * OutputPage::setSquidMaxage(); deprecated in 1.27
+ * OutputPage::readOnlyPage(); deprecated in 1.25
+ * OutputPage::rateLimited(); deprecated in 1.25
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,