message: Added bug fix note to CHANGELOG.md
diff: @@ -5,6 +5,11 @@ 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
  +
  +- Fixed a bug where bundling using generateShellMergeStrategy would result in
  + builds missing imports which should have been appended to shell.
  +
  ## 2.0.0-pre.3 - 2017-01-31
  - Changed the way bundle documents are generated, so that bundles based on a
  source file retain their HTML structure instead of always being synthesized
  