add changelog

Author: bleykauf

CHANGELOG.md

@@ -0,0 +1,14 @@
+# 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/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Fixed
+
+* Don't use setuptools_scm & specify version manually by @doronbehar in https://github.com/linien-org/pyrp3/pull/14
+
+[Unreleased]: https://github.com/linien-org/pyrp3/compare/v2.0.1...HEAD