add CHANGELOG

Author: mbhall88

CHANGELOG.md

@@ -0,0 +1,19 @@
+# CHANGELOG
+
+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).
+
+## [0.1.1] - 2020-05-16
+
+### Added
+
+- This CHANGELOG file.
+
+### Changed
+
+- Don't rely on `poetry` to get version.
+
+
+[1.1.0]: https://github.com/mbhall88/pafpy/compare/v0.1.0...v0.1.1