Pass kwargs to methodview

class MicroscopeView(MethodView):

    def __init__(self, microscope):

    def __init__(self, microscope, **kwargs):

        """

        Create a generic MethodView with a globally available

        microscope object passed as an argument.

        """

        self.microscope = microscope

        MethodView.__init__(self)

        MethodView.__init__(self, **kwargs)

class StreamAPI(MicroscopeView):