chore: Bump the version to v0.4.0

Signed-off-by: Awiteb <a@4rs.nl>

CHANGELOG.md

@@ -5,7 +5,7 @@ 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
+## [0.4.0] - 2025-08-08
 
 ### Added
 
@@ -126,6 +126,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initialize the project - by Awiteb
 
+[0.4.0]: https://git.4rs.nl/awiteb/n34.git/tag/?h=v0.4.0
 [0.3.0]: https://git.4rs.nl/awiteb/n34.git/tag/?h=v0.3.0
 [0.2.0]: https://git.4rs.nl/awiteb/n34.git/tag/?h=v0.2.0
 [0.1.0]: https://git.4rs.nl/awiteb/n34.git/tag/?h=v0.1.0