[webauthn] new commits pushed by leshi

The following commits were just pushed by leshi to 
https://github.com/w3c/webauthn:

* allow u2f attestation to be chained
  by Alexei Czeskis
https://github.com/w3c/webauthn/commit/1db4a971289347ac41b724138f920d675726d19d

Received on Tuesday, 14 February 2017 17:37:58 UTC