Convert date fields to datetime object

[mkucharz]

I think that library should deal with date fields and convert them to datetime object, right now field looks like this:

{u'type': u'datetime', u'value': u'2016-06-09T17:05:47.861890Z'}

[opalczynski]

This is raw format - the datetime is converted when data is populated into model. Is this not enough?