Update CHANGELOG.md

Author: DavidF-Dev

CHANGELOG.md

@@ -5,6 +5,8 @@ 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).
 
 ## [Unreleased]
+
+## [1.0.3] - 2022-02-27
 - Added JetBrain annotations.
 - Replaced exceptions with Debug.LogError.