update changelog

Author: shn-liqd

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 Since version v2308 the format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 This project (not yet) adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Make tile images 4:3 (#716)
+
 ## v2507.1
 
 ### Added