Update CHANGELOG.md

Author: gkjohnson

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [0.4.17] - Unreleased
+## [0.4.17] - 2025.09.27
 ### Added
 - LoadRegionPlugin: Added support for "mask" regions that allow for only loading tiles within the shape.
 - Added WMSTilesOverlay & WMSTilesPlugin for displaying and overlaying WMS image tiles.