0.6

• Redirects back to where you were after you login, using a new asgi_auth_redirect cookie - #26
• Unset asgi_auth_logout cookie when you sign in again - #28
• Fixed bug where API call to GitHub intermittently failed with ConnectionResetError - #27
• More robust creation of derived cookie signing secret using hashlib.pbkdf2_hmac
• HTML pages now served with charset=UTF-8 - #30