Pytwitcherapi

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* Fix login server shutdown by correctly closing the socket

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* Easier imports. Only import the package for most of the cases.
* Added logging. Configure your logger and pytwitcher will show debug messages.

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* Authentication: User can login and TwitchSession can retrieve followed streams.

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* Fix wrap json using actual class instead of cls

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* Refactor twitch module into models and session module

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* Fix wrapping search stream results due to incomplete channel json