release: v0.4.0

Author: Sandro Gehri

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## v0.4.0 (2023-03-20)
+### Changed
+- Changed underlying `openai/client` package version from 0.3.5 to 0.4.0
+
 ## v0.3.5 (2023-03-09)
 ### Added
 - First version