Cannot dump or load `None` with type `NoneType`.

[rhaps0dy]

A bit silly, but a dataclass with a field of type None (or de/serializing something with NoneType itself) errors.

from databind.json import dump, load

load(None, None)
# NoMatchingConverter: no deserializer for `TypeHint(NoneType)` and payload of type `NoneType`

dump(None, None)
# NoMatchingConverter: no serializer for `TypeHint(NoneType)` and payload of type `NoneType`

Is this intentional or an oversight?