Update CHANGELOG.md

Author: jlowellwofford

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).
 
+## [0.2.0] - 2021-08-18
+### Changed
+- Refactor into a reusable package with a runnable Script object
+### Added
+- Script module now allows execution of subscripts
+
 ## [0.1.3] - 2021-03-23
 ### Fixed
 - Fix a critical bug that caused foreground apps that need PTYs to fail