chore: Prepare for 1.0.0 release (#3)

Prepare for 1.0.0 release

Author: mjc1283

CHANGELOG.md

@@ -5,3 +5,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [1.0.0] - September 27th, 2019
+
+Initial release