Glad to announce Vaadin gwt-polymer-elements 126.96.36.199-alpha2  .
After some experiments wrapping polymer elements 0.5, we have worked hard on supporting polymer 1.0.2.
The library is available in maven central, and includes anything needed to start working with Paper and Iron Elements.
Visit the gwt-polymer-elements showcase  to know all elements available, click on the links at the top corner to see the UiBinder and java code.
We need your help to test and improve the API, please don't hesitate to ask for new features or report issues in github.