message: Version should be 2.2.0 not 2.1.1 because new functionality.
diff: # Change Log
  -## [v2.1.1](https://github.com/Polymer/dom5/tree/v2.1.1) (2017-04-14)
  +## [v2.2.0](https://github.com/Polymer/dom5/tree/v2.2.0) (2017-04-14)
  - **Added** `removeFakeRootElements` and `removeNodeSaveChildren` functions.
  ## [v2.1.0](https://github.com/Polymer/dom5/tree/v2.1.0) (2017-01-13)
  