release: Update CHANGELOG.md for 1.3.0

Author: nim65s

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.0] - 1980-01-01
+
 - :warning: require C++ >= 14
 - setup nix packaging & CI
 - setup mergify
@@ -93,7 +95,8 @@ Maintenance release
 
 Initial Release
 
-[Unreleased]: https://github.com/stack-of-tasks/eiquadprog/compare/v1.2.9...HEAD
+[Unreleased]: https://github.com/stack-of-tasks/eiquadprog/compare/v1.3.0...HEAD
+[1.3.0]: https://github.com/stack-of-tasks/eiquadprog/compare/v1.2.9...v1.3.0
 [1.2.9]: https://github.com/stack-of-tasks/eiquadprog/compare/v1.2.8...v1.2.9
 [1.2.8]: https://github.com/stack-of-tasks/eiquadprog/v1.2.7...v1.2.8
 [1.2.7]: https://github.com/stack-of-tasks/eiquadprog/v1.2.6...v1.2.7