update the Changelog.md

Author: Wall-ee

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on Keep a Changelog (https://keepachangelog.com/en/1.1.0/),
 and this project adheres to Semantic Versioning (https://semver.org/spec/v2.0.0.html).
 
+### [0.3.0] - 2025-08-18
+### Added
+- comprehensive pulse-level control capabilities for advanced quantum experiments and precise quantum manipulation.
+
 ## [0.2.1] - 2025-08-08
 ### Added
 - MCP service integration and multi-tool invocation support in the Homebrew_S2 HTTP API.