Add CHANGELOG notes for v0.3.0

Author: jacobcassidy

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2025-01-07
+
+### Added
+
+- Added `aspect-ratio` property to list of property-names, matching the latest commit to VSCode.
+- Added `light-dark` to list of color functions for proper syntax highlighting.
+
 ## [0.2.0] - 2025-01-06
 
 ### Added