Bump version to 1.3.0

Author: gituser789

CHANGELOG.md

@@ -5,6 +5,8 @@ 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]
+
+## [1.3.0] - 2022-06-30
 ### Added
  - Add source / load
  - Add power analyzer
@@ -105,7 +107,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - signal drawing stuff: square wave, sine wave, triangular wave, xy-diagrams
 - evaluation stuff: OK, not OK, flash
 
-[Unreleased]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.2.3...HEAD
+[Unreleased]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.3.0...HEAD
+[1.3.0]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.2.3...1.3.0
 [1.2.3]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.2.2...1.2.3
 [1.2.2]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.2.1...1.2.2
 [1.2.1]: https://github.com/upb-lea/Inkscape_electric_Symbols/compare/1.2.0...1.2.1