==== Changed external libraries ====
* Updated Mustache from 1.0.0 to v3.0.1.
+* Updated OOUI from v0.31.3 to v0.31.4.
* …
==== Removed external libraries ====
* …
=== Action API changes in 1.34 ===
-* …
+* The 'recenteditcount' response property from action=query list=allusers,
+ deprecated in 1.25, has been removed.
=== Action API internal changes in 1.34 ===
* …
* The ill-defined "DatabaseOraclePostInit" hook has been removed.
* PreferencesFormLegacy and PreferencesForm classes, deprecated in 1.32, have
been removed.
+* ObjectFactory class, deprecated in 1.31, has been removed.
+* HWLDFWordAccumudlator class, deprecated in 1.28, has been removed.
+* XMPInfo, XMPReader and XMPValidate, deprecated in 1.32, have been removed.
+* The RedirectSpecialPage::execute method could sometimes return a Title object.
+ This behavior was removed, and the method now matches the parent signature
+ (SpecialPage::execute) which is to return HTML string or void.
+ To obtain the destination title, use RedirectSpecialPage::getRedirect.
+* The 'recenteditcount' response property from action API action=query
+ list=allusers, deprecated in 1.25, has been removed.
+* SearchEngine::userNamespaces(), SearchEngine::namespacesAsText(),
+ SearchEngine::create(), SearchEngine::getSearchTypes() and
+ SearchEngine::getNearMatch(), methods deprecated in 1.27, have been removed
=== Deprecations in 1.34 ===
* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
+* ExtensionRegistry->load() is deprecated, as it breaks dependency checking.
+ Instead, use ->queue().
* …
=== Other changes in 1.34 ===