Update changelog for version 2.1.0 release

Updated changelog to reflect version 2.1.0 release date and significant changes related to image processing.

Author: sphildreth

docs/pages/changelog.md

@@ -21,7 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
-## [2.1.0] - [UNRELEASED]
+## [2.1.0] - 2026-05-24
 
 ### Changed