Web Authentication: An API for accessing Public Key Credentials Level 2

2019-06-05: ACTION-2195 Janina to review. ACTION-2196 Jason to review.
2020-06-08: Abandoning review.
2020-10-19: Explicit review request.
2020-12-02: ACTION-2270 Paul to review. Note diff from level 1 will be easier. ACTION-2271 Janina will also approach John Rochford.
2020-12-09: Paul's comments in APA meeting. Paul will write up and send to APA list.
2020-12-18: Paul's comments.
2020-12-22: Published as CR Snapshot.
2021-01-21: CfC issued on comments.
2021-01-27: Will issue a new CfC.
2021-02-02: Comment filed.
2021-02-04: APA satisfied.