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- Recommend middleware order to be ``610`` to run before ``RedirectMiddleware``.
- Change default download timeout to 190s or 3 minutes 10 seconds
(instead of 1800s or 30 minutes).
- Test and advertize Python 3 compatiblity.
- New ``crawlera/request`` and ``crawlera/request/method/*`` stats counts.
- Clear Scrapy DNS cache for proxy URL in case of connection errors.
- Distribute plugin as universal wheel.