brings in a fix to InvalidEmail/Phone/AddressExceptions not being
instantiated correctly. `exception.message` is not a python standard,
so we shouldn't be relying on it to transmit exception reasons -
rather we should be using `str(exception)` instead. This involved a
handful of small changes to the schema validation
The reason for doing this is to ensure the tasks performed for the Notify users are not queued behind a large job, a way to
ensure priority for messages.
6th task for story: https://www.pivotaltracker.com/story/show/135839709
We're formally using the ISO 8601 UTC datetime format, and so the
correct way to output the data is by appending the timezone.
("Z" in the case of UTC*).
Unfortunately, Python's `datetime` formatting will just ignore the
timezone part of the string on output, which means we just have to
append the string "Z" to the end of all datetime strings we output.
Should be fine, as we will only ever output UTC timestamps anyway.
* https://en.wikipedia.org/wiki/ISO_8601#UTC
This version of the client removed the request method, path and body from the encode and decode methods.
The biggest changes here is to the unit tests.
Droped token as later code to send email invite can generate
timebased url to send to user. That can then be checked
against configurable time threshold for expiry. Therefore
no need to store a token.
