Gunicorn

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* Improve gevent's workers. Add "egg:gunicorngevent_wsgi" worker using
`gevent.wsgi <http://www.gevent.org/gevent.wsgi.html>`_ and
"egg:gunicorngevent_pywsgi" worker using `gevent.pywsgi
<http://www.gevent.org/gevent.pywsgi.html>`_ .
**"egg:gunicorngevent"** using our own HTTP parser is still here and
is **recommended** for normal uses. Use the "gevent.wsgi" parser if you
need really fast connections and don't need streaming, keepalive or ssl.
* Add pre/post request hooks
* Exit more quietly
* Fix gevent dns issue

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* New HTTP parser.
* New HUP behaviour. Re-reads the configuration and then reloads all
worker processes without changing the master process id. Helpful for
code reloading and monitoring applications like supervisord and runit.
* Added a preload configuration parameter. By default, application code
is now loaded after a worker forks. This couple with the new HUP
handling can be used for dev servers to do hot code reloading. Using
the preload flag can help a bit in small memory VM's.
* Allow people to pass command line arguments to WSGI applications. See:
`examples/alt_spec.py
<http://github.com/benoitc/gunicorn/raw/master/examples/alt_spec.py>`_
* Added an example gevent reloader configuration:
`examples/example_gevent_reloader.py
<http://github.com/benoitc/gunicorn/blob/master/examples/example_gevent_reloader.py>`_.
* New gevent worker "egg:gunicorngevent2", working with gevent.wsgi.
* Internal refactoring and various bug fixes.
* New documentation website.

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* Support https via X-Forwarded-Protocol or X-Forwarded-Ssl headers
* Fix configuration
* Remove -d options which was used instead of -D for daemon.
* Fix umask in unix socket

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* Added *when_ready* hook. Called just after the server is started
* Added *preload* setting. Load application code before the worker processes
are forked.
* Refactored Config
* Fix pidfile
* Fix QUIT/HUP in async workers
* Fix reexec
* Documentation improvements

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* Fix builtins import in config
* Fix installation with pip
* Fix Tornado WSGI support
* Delay application loading until after processing all configuration

------------------

* Refactored Worker management for better async support. Now use the -k option
to set the type of request processing to use
* Added support for Tornado_