[shadowdance]

i have actually no idea if that is a "good" or "proper" way, but after digging, i found a fix for me:

diff core.py core_orig.py 
219d218
<         request_token = {key.decode('utf-8'): value.decode('utf-8') for (key, value) in request_token.items()}
230d228
<         access_token= {key.decode('utf-8'): value.decode('utf-8') for (key, value) in access_token.items()}