Update the changelog

CHANGELOG.md

@@ -9,7 +9,8 @@ See also the [GitHub releases page](https://github.com/terminal42/contao-DC_Mult
 * Added the changelog ;-) (#56)
 * Raised minimum PHP version to 5.6.
 * Raised minimum Contao version to 4.4.
-* **BC break:** Removed the deprecated `pidColumn` configuration. Use `langPid` instead.
 * Multilingual aliases have been improved, so language records can have the same alias as main record. (#47)
 * The models are not prevented from saving by default anymore. They are only prevented if fetched from database. (#51)
 * Allow to count records using subqueries, e.g. with `HAVING` clause.
+* **BC break:** Removed the deprecated `pidColumn` configuration. Use `langPid` instead.
+* **BC break:** Added the new interface method `MultilingualQueryBuilderInterface::buildQueryBuilderForCountWithSubQuery()`.