Update changelog

CHANGELOG.md

 
+<a name="v1.9.0"></a>
+## [v1.9.0] - 2022-10-15
+### Add Features
+- feat implements proxy interface [#2](https://gitlab.schukai.com/oss/libraries/go/application/xflags/issues/2)
+
+
 <a name="v1.8.3"></a>
 ## [v1.8.3] - 2022-10-15
 ### Bug Fixes
@@ -102,6 +108,7 @@
 <a name="v1.0.0"></a>
 ## v1.0.0 - 2022-10-04
 
+[v1.9.0]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.8.3...v1.9.0
 [v1.8.3]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.8.2...v1.8.3
 [v1.8.2]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.8.1...v1.8.2
 [v1.8.1]: https://gitlab.schukai.com/oss/libraries/go/application/xflags/compare/v1.8.0...v1.8.1