Add release date to 0.7.0

Author: dbanty

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
-## 0.7.0 - Unreleased
+## 0.7.0 - 2020-11-25
 
 ### Breaking Changes