added to $wgExtraLanguageCodes instead.
=== New features in 1.29 ===
+* (T137376) New language support: Atikamekw (atj)
* (T5233) A cookie can now be set when a user is autoblocked, to track that user
if they move to a new IP address. This is disabled by default.
* Added ILocalizedException interface to standardize the use of localized