Results are empty

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When calling for example, get_balance(), debug mode prints:

Response: {"money" : "0.2374", "bonusAmount" : "0", "currency" : "EUR"}

Although result of the function is empty dict.
Please see screenshot:

Also, message_send() returns [{}], while JSON response looks like this:

{'37...': {'cost': 0.0186,
                 'count_sms': 1,
                 'error': '0',
                 'id_sms': '5242122661869102650002',
                 'network': None,
                 'ported': False,
                 'sender': 'smstest'}}

Python 3.4.2 (Debian 8 jessie), intis 0.2 from PyPi.

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