chore: update changelog

Author: Nick MacCarthy

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).
 
+## [3.0.3] - 2024-09-12
+### fixed
+- Fix: issue where version wasnt getting populated
+- Fix: move version out of `VERSION.txt` and into `datemath/_version.py` directly
+- Fix: typos in CHANGELOG.  Thank you @s00hyun!
+
 ## [3.0.2] - 2024-09-11
 ### added
 - Feat: Complete typing with strict type-checking [#43](https://github.com/nickmaccarthy/python-datemath/pull/43) Thank you @Avasam!