message: Uncommented out the ## Unreleased header in CHANGELOG.
diff: @@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
  The format is based on [Keep a Changelog](http://keepachangelog.com/)
  and this project adheres to [Semantic Versioning](http://semver.org/).
  -<!-- ## Unreleased -->
  +## Unreleased
  - BREAKING: Public API change. The `bundle()` method now takes a manifest
  instead of entrypoints, strategy and mapper. To produce a manifest,
  