Refactor jwt auth into authenticate_bearer_token() method on Client The json web token authentication was buried inside determine user. Refactored to put this authenticate_bearer_token method so it can (hopefully) be overriden by an instance.

try:
    # Python 3+.
    from xmlrpc import client, server
    server.SimpleXMLRPCDispatcher
except (ImportError, AttributeError):
    # Python 2.
    import xmlrpclib as client
    import SimpleXMLRPCServer as server