Vk-requests

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* [Improvement] [41](https://github.com/prawn-cake/vk-requests/issues/41): DeprecationWarning: Using or importing the ABCs from 'collections'

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* [Feature] [37](https://github.com/prawn-cake/vk-requests/issues/37): Direct authorization

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* [Bugfix] [29](https://github.com/prawn-cake/vk-requests/issues/29): Fix captcha parsing

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* [Feature] Allow to override requests http params

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* [Feature] Streaming API

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* [Feature] [26](https://github.com/prawn-cake/vk-requests/issues/26): Service token support