Update CHANGELOG.md

Author: MenoData

CHANGELOG.md

@@ -1,6 +1,8 @@
-## [v4.11] not yet released
+## [v4.12] not yet released
+
+## [v4.11] published on 2016-01-22
 ### Added
-- New approximation normalizer based on max unit only [#442]
+- Two new approximation normalizers based on max unit only [#442]
 - Add pattern-based factory method to ChronoFormatter for any chronology [#441]
 - Introduce or-operator in formatting via builder and pattern [#437}
 - Add other historic eras [#436]