Django-analytical

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* Mark package as Python 3 compatible (Martín Gaitán)
* Fix Clickmap tracker id regular expression
* Test with Django 1.8

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* Added compatibility with Python 3 (Eric Amador)

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* Support Django 1.7 (Craig Bruce)
* Update Mixpanel identity code (Martín Gaitán)
* Identify authenticated users in Uservoice (Martín Gaitán)
* Add full name and email to Olark (Scott Adams)

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* Add Piwik integration (Peter Bittner)

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* Update HubSpot code (Craig Bruce)

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* Fix typo in Intercom.io support (Steven Skoczen)