Requests-ssl-v3

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* Packaging fix.

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* SSL CERT VERIFICATION!
* Release of Cerifi: Mozilla's cert list.
* New 'verify' argument for SSL requests.
* Urllib3 update.

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* iter_lines last-line truncation fix
* Force safe_mode for async requests
* Handle safe_mode exceptions more consistently
* Fix iteration on null responses in safe_mode

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* Socket timeout fixes.
* Proxy Authorization support.

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* Response.iter_lines!

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* Prefetch bugfix.
* Added license to installed version.