MSC4133: Update profile endpoints to support extended fields

[tcpipuk]

Signed-off-by: Tom Foster [email protected]

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• Pull request is classified as 'other changes'

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[Half-Shot]

Could you link to matrix-org/matrix-spec-proposals#4133 in the body for easy referencing?

[Half-Shot]

Some thoughts I had when reading though. I think largely I'm asking for a section to define the common profile keys, which may expand later when more keys make it into the spec.

But this is a great start, thanks for kicking off.

[zecakeh]

I think that this also needs at least a small sentence in the "Events on Change of Profile Information" section that other fields are not propagated through m.room.member events (and m.presence?).