docs: prepare v0.10.0

Author: Rogdham

CHANGELOG.md

@@ -5,9 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/), and this project
 adheres to [Semantic Versioning](https://semver.org/).
 
-## [Unreleased]
+## [0.10.0] - 2023-04-22
 
-[unreleased]: https://github.com/rogdham/bigxml/compare/v0.9.0...HEAD
+[0.10.0]: https://github.com/rogdham/bigxml/compare/v0.9.0...v0.10.0
 
 ### :boom: Breaking changes