Update CHANGELOG

CHANGELOG.md

@@ -4,6 +4,8 @@ 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/).
 
 ## [Unreleased]
+
+## [0.4.2] - 2020-11-15
 ### Fixed
 - Fix a bug where `Model.fit` would fail for unhashable steps ([PR #43](https://github.com/alegonz/baikal/pull/43)).
 
@@ -78,7 +80,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 - Everything. This is the first (pre-release) version.
 
-[Unreleased]: https://github.com/alegonz/baikal/compare/v0.4.1...HEAD
+[Unreleased]: https://github.com/alegonz/baikal/compare/v0.4.2...HEAD
+[0.4.2]: https://github.com/alegonz/baikal/compare/v0.4.1...v0.4.2
 [0.4.1]: https://github.com/alegonz/baikal/compare/v0.4.0...v0.4.1
 [0.4.0]: https://github.com/alegonz/baikal/compare/v0.3.1...v0.4.0
 [0.3.1]: https://github.com/alegonz/baikal/compare/v0.3.0...v0.3.1