authorization key exchange

[humanlyj]

Dear all,

I've using this library and it's good. Really appreciate.

I have a issue about that 'changeconfiguration'. I got a new key from server by 'changeconfiguration' message for authorization. But I couldn't find the code to make new authorization key. Like this, base64("AuthID:NewAuthkey");

Authorization key was not changed after receive the new key from server. Then my module fail to register because it was re-connect to server with same authorization key.

May I missed something? Please help me.