Fingerprinting guidance update; responding to feedback, Note publication?

I've revised the Fingerprinting Guidance for Web Specification Authors text, responding as best I can to comments from the TAG, the Tor Browser folks and other comments via mailing list.

http://w3c.github.io/fingerprinting-guidance/

Changes in particular include:
* moving feasibility question up earlier, emphasizing realism/pessimism
* clarifying some of the best practices, regarding unnecessary additions to fingerprinting surface
* additional examples and references (in particular, to the TAG finding on unsanctioned tracking)
* filling in to-do sections (and marking remaining ones with issue boxes)

To clarify the status of this document and to gather wider review, I think it would be useful to publish this as a draft Interest Group Note. As a Process matter, that would consist of: the Interest Group deciding we want to publish it as an Interest Group Note; getting confirmation from the domain lead that we can use this name/shortname; publishing a snapshot on w3.org indicating its status as a draft Note; asking chairs and other groups for feedback.

And in any case, I'd welcome further feedback, additions, subtractions and the like. I get the impression that specific examples from different specs/Working Groups would be the most welcome addition.

Thanks,
Nick