Merge pull request #44 from RMLio/cleanup

added changelog, ready for v0.2.0

CHANGELOG.md

@@ -0,0 +1,28 @@
+# 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]
+
+## [0.2.0] - 2021-04-13
+
+### Added
+
+- Changelog
+
+### Fixed
+
+- Prefixes (fixing a.o. #18 #22 #24)
+- rml:reference instead of rr:refernce (fixing #33)
+- escaping the backslash
+
+## 0.1.0 - 2019-04-24
+
+### Added
+
+- First version
+
+[0.2.0]: https://github.com/RMLio/rml-test-cases/compare/v0.1.0...v0.2.0