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- new --graceful-timeout option
- fix multiple issues with request limit
- more fixes in django settings resolutions
- fix gevent.core import
- fix keepalive=0 in eventlet worker
- fix handle_error display with the unix worker
- fix tornado.wsgi.WSGIApplication calling error
- **breaking change**: take the control on graceful reload back.
graceful can't be overridden anymore using the on_reload function.