chore: add changelog

ymgyt · ymgyt · commit 7facfc4488fc · 2024-01-16T03:34:10.000+09:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# 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).
+
+## [Unreleased]
