cm: prep for cm/v0.1.0

Author: ydnar

cm/CHANGELOG.md

@@ -2,7 +2,7 @@
 
 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]
+## [v0.1.0] — 2024-12-14
 
 Initial version, extracted into module [`go.bytecodealliance.org/cm`](https://pkg.go.dev/go.bytecodealliance.org/cm).