Release v5.13

Co-authored-by: Christoph <[email protected]>
Co-authored-by: Carl Christian Snethlage <[email protected]>

Author: 3 people

CHANGELOG.md

@@ -7,7 +7,7 @@ In case, there is no issue present, the pull request implementing the feature is
 
 Note that this project **does not** adhere to [Semantic Versioning](https://semver.org/).
 
-## [Unreleased]
+## [5.13] – 2024-04-01
 
 ### Added
 
@@ -1287,7 +1287,8 @@ The changelog of JabRef 4.x is available at the [v4.3.1 tag](https://github.com/
 The changelog of JabRef 3.x is available at the [v3.8.2 tag](https://github.com/JabRef/jabref/blob/v3.8.2/CHANGELOG.md).
 The changelog of JabRef 2.11 and all previous versions is available as [text file in the v2.11.1 tag](https://github.com/JabRef/jabref/blob/v2.11.1/CHANGELOG).
 
-[Unreleased]: https://github.com/JabRef/jabref/compare/v5.12...HEAD
+[Unreleased]: https://github.com/JabRef/jabref/compare/v5.13...HEAD
+[5.13]: https://github.com/JabRef/jabref/compare/v5.12...v5.13
 [5.12]: https://github.com/JabRef/jabref/compare/v5.11...v5.12
 [5.11]: https://github.com/JabRef/jabref/compare/v5.10...v5.11
 [5.10]: https://github.com/JabRef/jabref/compare/v5.9...v5.10