message: Updated CHANGELOG for 6.1.4 release.
diff: @@ -6,9 +6,12 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
  and this project adheres to [Semantic Versioning](http://semver.org/).
  ## Unreleased
  +<!-- Add new, unreleased items here. -->
  +
  +## 6.1.4 - 2017-08-31
  +
  * Removed reliance on `document.currentScript` in browser.js because IE11 doesn't have it.
  * To use WCT tests with NPM in browser without WCT (or polymer-cli) running on the commandline, you must include an `?npm=true` or `&npm=true` parameter in the URL for the test document; WCT does this automatically when opening its own browsers.
  -<!-- Add new, unreleased items here. -->
  ## 6.1.3 - 2017-08-26
  