Added v1.1.0 release date to changelog

Author: yahiaetman

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [1.1.0]
+## [1.1.0] - 2021-01-23
 ### Added
 - Added a Scene Transparent Depth PrePass.