Client(): use SimpleNamespace objects instead of dicts
Client(): use SimpleNamespace objects instead of dicts

Instead of returning a dict() now SimpleNamespace objects are returned.

>>> from varlink import Client
>>> iface = ifaces = Client(interface='com.redhat.system.accounts')["com.redhat.system.accounts"]
>>> ret = iface.GetAccountByName("root")

Instead of:
>>> name = ret["account"]["full_name"]

it is now:
>>> name = ret.account.full_name

varlink/python-varlink,varlink/python-varlink