* Added MWTimestamp::getTimezoneString() which returns the localized timezone
string, if available. To localize this string, see the comments of
$wgLocaltimezone in includes/DefaultSettings.php.
+* Added CentralIdLookup, a service that allows extensions needing a concept of
+ "central" users to get that without having to know about specific central
+ authentication extensions.
=== External library changes in 1.27 ===
==== Upgraded external libraries ====
* Updated oojs/oojs-ui from v0.12.12 to v0.13.3.
* Updated composer/semver from v1.0.0 to v1.2.0.
+* Update liuggio/statsd-php-client to 1.0.18.
==== New external libraries ====
* Added wikimedia/base-convert v1.0.1.
ResourceLoaderContext instance is deprecated.
* ResourceLoader::getLessCompiler() now takes an optional parameter of
additional LESS variables to set for the compiler.
+* wfBaseConvert() marked as deprecated, use Wikimedia\base_convert() directly instead.
== Compatibility ==