[Mailman-Developers] Small change to REST API for held subscription requests

I want to make some minor backward incompatible changes to the JSON representation for pending mailing lists requests, e.g. subscription holds. You'll see these for example in urls like:

>>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/requests')
entry 0:
    delivery_mode: regular
    display_name: Anne Person
    email: anne@example.com
    http_etag: "..."
    language: en
    request_id: ...
    type: subscription
    when: 2005-08-01T07:49:23

The first change is that type: subscription requests will change their address key to email for consistency with other parts of the API. Second, there will be no password key.

Let me know if this is a problem, and I can copy email to address so that both would appear, and add a dummy password key.

Cheers, -Barry