Remove updateOrCreateFromFields and it's uses
All uses of updateOrCreateFromFields were replaced with
updateOrCreateFromKeyname. This way the logic API is not as cluttered
with a bunch of helper methods.
Patch by: Sverre Rabbelier
from query import *
from subqueries import *
from where import AND, OR
from datastructures import EmptyResultSet
__all__ = ['Query', 'AND', 'OR', 'EmptyResultSet']