Update changelog

Author: XWB

CHANGELOG-4.1.md

@@ -4,6 +4,14 @@ CHANGELOG for 4.1.x
 This changelog references the relevant changes (bug and security fixes) done
 in 4.1 versions.
 
+## 4.1.2 (2017-12-xx)
+
+* Fixed Doctrine registry in `MongoDB` and `PHPCR` pager providers.
+
+## 4.1.1 (2017-12-20)
+
+* Unset options of new provider API when an old one is used.
+
 ## 4.1.0 (2017-12-18)
 
 * Introduce a new provider's API. Deprecate legacy ones. See #1240