Update changelog

Author: Faltenreich

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [6.0.0] - 2025-01-30
+
+### Added
+
+- Added property for custom mask layout
+
 ## [5.0.0] - 2023-08-06
 
 ### Changed