Update CHANGELOG

CHANGELOG.md

@@ -5,7 +5,11 @@ 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).
 
-## [Unreleased]
+## [v0.3.0](https://github.com/wowica/xogmios/releases/tag/v0.3.0) (2024-03-29)
+
+### Added
+
+- Support for all State queries, including Ledger-state and Network.
 
 ### Changed
 
@@ -17,7 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.2.0](https://github.com/wowica/xogmios/releases/tag/v0.2.0) (2024-02-24)
 
-## Added
+### Added
 
 - Support for Tx Submission procotol
   - Submit signed transactions