docs: release 0.4.0

Author: tpetry

CHANGELOG.md

@@ -5,6 +5,10 @@ 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).
 
+## [0.4.0] - 2023-06-01
+### Added
+* `Value` class to embed any escaped value into a query
+
 ## [0.3.0] - 2023-05-16
 ### Added
 * Current time