In '__init__' super method should use static class name (#497)
In '__init__' super method should use static class name (#497)

Currently it is not possible to extend SpotifyClientCredentials and SpotifyOAuth
This is because in the class __init__ they refer to 'self.__class__', this leads
to an infinite recursion if the parent class doesn't override completely the __init__
method.
plamere/spotipy