Update changelog

CHANGELOG.md

 
+<a name="v1.16.0"></a>
+## [v1.16.0] - 2023-05-20
+
 <a name="v1.15.0"></a>
 ## [v1.15.0] - 2023-03-09
 
@@ -162,6 +165,7 @@
 <a name="v1.0.0"></a>
 ## v1.0.0 - 2022-10-04
 
+[v1.16.0]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.15.0...v1.16.0
 [v1.15.0]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.14.0...v1.15.0
 [v1.14.0]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.13.2...v1.14.0
 [v1.13.2]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.13.1...v1.13.2