[webauthn] new commits pushed by emlun

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

* Re-introduce missing definitions of [cross-]platform attachment
  by Emil Lundberg
https://github.com/w3c/webauthn/commit/d26ecf4ac70da2ef8266b3279e66e3db6baff04d

Received on Tuesday, 26 June 2018 17:58:48 UTC