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+# 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).
+
+## [Unreleased]
+### Added
+- a changelog (this file)
+- dev and test dependencies are defined in packaging metadata
+
+### Changed
+- all tests now pass
+- switched from setup.py to setup.cfg based packaging structure
+
+## <[0.9.1]
+It would be a lot of work to trudge through this, and of little to no value.
+
+If you really care, commit `d43d52e55e2d22eacbfae0f526e4717458efd185` and prior is what you want to look at.