UnicodeDecodeError: 'utf-8' codec can't decode byte 0x92 in position 0: invalid start byte

Hello :)

i'm facing the following problem: After connecting to iot.eclipse.org (198.41.30.241:1883) with Paho-mqtt, subscribe to all topics ("#") and printing them, the program crashes with the following error:

`File "/usr/local/lib/python3.4/dist-packages/paho/mqtt/client.py", line 377, in topic
return self._topic.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x92 in position 0: invalid start byte`

The problem:
So of course, i know MQTT requires utf-8 but in case it's not, there should be a error handling on all utf-8 decodings.

Best Regards
mi3z