from CDN to mitigate DB replication lag and WAN cache purge lag.
* (T49162) Installer will default to setting CACHE_ACCEL as the main cache type
if it is available.
+* It is now possible to patrol file uploads (both for new files and new versions
+ of existing files). Special:NewFiles has gained an option to filter by patrol
+ status. This functionality can be disabled using $wgUseFilePatrol.
=== External library changes in 1.27 ===
* Language::armourMath() was removed (deprecated since 1.22).
* LanguageConverter::armourMath() was removed (deprecated since 1.22).
* FakeConverter::armourMath() was removed (deprecated since 1.22).
+* The unused jquery.validate ResourceLoader module was removed.
== Compatibility ==