Prepare release v0.3.0

Created-by: polyglot-release v1.6.1

Author: davidjgoss

CHANGELOG.md

@@ -6,6 +6,8 @@ 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]
+
+## [0.3.0] - 2025-07-30
 ### Added
 - Add `sourceReference` to test cases and test steps in plan ([#5](https://github.com/cucumber/javascript-core/pull/5))
 
@@ -24,7 +26,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Initial implementation ([#1](https://github.com/cucumber/javascript-core/pull/1))
 
-[Unreleased]: https://github.com/cucumber/javascript-core/compare/v0.2.1...HEAD
+[Unreleased]: https://github.com/cucumber/javascript-core/compare/v0.3.0...HEAD
+[0.3.0]: https://github.com/cucumber/javascript-core/compare/v0.2.1...v0.3.0
 [0.2.1]: https://github.com/cucumber/javascript-core/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/cucumber/javascript-core/compare/v0.1.0...v0.2.0
 [0.1.0]: https://github.com/cucumber/javascript-core/compare/a08431c...v0.1.0

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@cucumber/core",
-  "version": "0.2.1",
+  "version": "0.3.0",
   "description": "Core test case composition library for building a Cucumber implementation",
   "type": "commonjs",
   "main": "dist/index.js",