Updated the JSONResponseMixin to work with non-ASCII characters and other data types such as datetimes.
Merge pull request #22 from jezdez/fixed-json-mixin

Updated the JSONResponseMixin to work with non-ASCII characters and other data types such as datetimes.
Raises PermissionDenied if raise_exception=True.
Merge pull request #23 from noirbizarre/raise-403

Raises PermissionDenied if raise_exception=True.
changelog and version bump
a bit more info in readme
rst fix