Add changelog entries

Author: jerry-git

CHANGELOG.md

@@ -4,3 +4,11 @@ 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
+- Wolt cookiecutter + cruft setup, see https://github.com/jerry-git/pytest-split/pull/33
+
+## [0.4.0] - 2021-11-09
+### Changed
+- Durations file content in prettier format, see https://github.com/jerry-git/pytest-split/pull/31
+
+[0.4.0]: https://github.com/jerry-git/pytest-split/tree/0.4.0