[w3c/webauthn] c647b7: Define Public Key Credential Source and Credential...

  Branch: refs/heads/master
  Home:   https://github.com/w3c/webauthn
  Commit: c647b7099dfc78dcab15998783971efa1ea67987
      https://github.com/w3c/webauthn/commit/c647b7099dfc78dcab15998783971efa1ea67987
  Author: Jeffrey Yasskin <jyasskin@gmail.com>
  Date:   2017-11-02 (Thu, 02 Nov 2017)

  Changed paths:
    M index.bs

  Log Message:
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  Define Public Key Credential Source and Credential ID. (#620)

This also redefines "Public Key Credential" to cover private keys, public keys, and assertions, as a willful violation of RFC4949.

Credential ID is defined to explicitly include the possibility that it's the encrypted Credential Source.