Update CHANGELOG.md

CHANGELOG.md

@@ -4,9 +4,13 @@ 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]
+## [6.0.0](https://github.com/styled-components/jest-styled-components/compare/v5.0.1...v6.0.0) - 2018-08-11
+### Changed
+- [toHaveStyleRule] Added support for Jest asymmetric matchers and more (see [#148](https://github.com/styled-components/jest-styled-components/pull/148)).
+
 ### Fixed
-- Nested component classNames are serialized too. Fixes [bug 101](https://github.com/styled-components/jest-styled-components/issues/101)
+- [toHaveStyleRule] Support `&&` (see [#126](https://github.com/styled-components/jest-styled-components/pull/126)).
+- [toHaveStyleRule] Nested component classNames are serialized too(see [#162](https://github.com/styled-components/jest-styled-components/pull/162)).
 
 ## [5.0.1](https://github.com/styled-components/jest-styled-components/compare/v5.0.0...v5.0.1) - 2018-04-01
 ### Fixed