Alexey comments

[richsalz]

This addresses Alexey's comments that haven't already been resolved.

There is one open question about base64, posted to the list as https://mailarchive.ietf.org/arch/msg/trans/a0MXL0pqVRKi8NB8199YoUQRlpo/ Once I get confirmation I will take this out of WIP; commit 737b95f has the expected wording.

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[richsalz]

Confirmation from an expert (@AGWA) so taking this out of WIP.

(Edited to fix the atsign, was AG oops sorry.)

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