add changelog

Author: programmerjake

CHANGELOG.md

@@ -0,0 +1,38 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Changed
+
+* Update PyO3 from v0.8.2 to v0.9.0-alpha1
+
+## [0.1.2]
+
+### Added
+
+* Add Python bindings using PyO3 v0.8.2
+
+## [0.1.1]
+
+### Changed
+
+* Split common functionality out into internal function `remove_zero_from_interval`
+
+### Added
+
+* Added functions for calculating the integer part of the base-2 log of a `RealAlgebraicNumber`
+
+## 0.1.0
+
+### Added
+
+* Initial release
+
+[Unreleased]: https://salsa.debian.org/Kazan-team/algebraics/-/compare/v0.1.2...master
+[0.1.2]: https://salsa.debian.org/Kazan-team/algebraics/-/compare/v0.1.1...v0.1.2
+[0.1.1]: https://salsa.debian.org/Kazan-team/algebraics/-/compare/v0.1.0...v0.1.1