Create CHANGELOG.md

Author: wvwatson

CHANGELOG.md

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+# Change Log
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+### Added
+- Ability to send and receive messages from ci services
+
+### Changed
+
+## 2019-08-04
+- Build capability