Prepare release v1.4.0

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [v1.4.0] - 2024-03-03
+
 ### Added
 
 -   Added Freedoom Shellbox sprites (#25).
@@ -132,7 +134,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -   Initial Release.  Originally made by Testament-Holmes, now maintained by the community.
 -   Added all boxable rounds provided by HDBulletLib
 
-[Unreleased]: https://github.com/HDest-Community/reusable-ammoboxes/compare/v1.3.2...HEAD
+[Unreleased]: https://github.com/HDest-Community/reusable-ammoboxes/compare/v1.4.0...HEAD
+
+[v1.4.0]: https://github.com/HDest-Community/reusable-ammoboxes/compare/v1.3.2...v1.4.0
 
 [v1.3.2]: https://github.com/HDest-Community/reusable-ammoboxes/compare/v1.3.1..v1.3.2