message: Spelled out what Server-Side Include comments are in the CHANGELOG.md
diff: @@ -10,7 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  - Apply `<base target="...">` to links and forms in the same document as
  appropriate.
  - License comments are deduplicated properly now.
  -- SSI comments are no longer stripped.
  +- Server-Side Include comments `<!--# ... -->` are no longer stripped.
  ## 2.0.0-pre.5 - 2017-02-14
  - Handle base tags when resolving the dependency graph of imports.
  