Updated change log

CHANGELOG.md

@@ -1,3 +1,15 @@
 # Changelog
 
 All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] — 2024-06-16
+
+### Added
+
+- Basic configuration including editor, Git, and MyRepos configuration files
+- Essential documents including license and GitHub health files
+- Main body of the program
+- GitHub release workflow
+- *nix man page
+
+[1.0.0]: https://github.com/bilbilak/treegen/releases/tag/v1.0.0