Pando

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* Fixes a bug in error handling (393)

* Restores request.context (392)

* Introduces a dispatch_result object (389)

* Refactors the dispatcher (389)

* Removes the request.fs attribute (389)

* Removes the request.website attribute (385)

* Makes the Canonizer utility more configurable (382)

* Refactors request body parsing (377)

* Removes `thrash` utility (376)

* Adds support for PORT envvar to `python -m aspen` (356)

* Fixes a bug in header parsing (369)

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* Finally fix the dispatcher to fully work with .spt files

* Add a data-driven test suite for the dispatcher

* Add a jsonp_dump renderer

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* Cleans up implicit casting to unicode in headers (364)

* Fixes regression w/ request bodies in test client (360)

* Fixes bug in request logging during exception handling (291)

* Fixes to the aspen.io site

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* Fixes to the aspen.io site (Thanks BigBlueHat!)

* Make HTTP dates always end in GMT (Thanks Changaco!)

* Clean up error.spt a bit wrt pygmentation and show_traceback interactions

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* Aspen server is gone! Aspen is now a pure-WSGI app!
...well, okay, for dev purposes it'll run under wsgiref via
python -m aspen

* Socket.IO support is gone! ..but not forgotten. We'll get it
back someday, when there's a sane way to do so.

* The datapath is now much more unicode-clean

* Simplate files can now specify their encodings

* Tweaks to work better under windows (thanks BigBlueHat!)

* Documentation is moving toward Sphinx!

* JSON support was moved into a renderer. It's no longer a special
simplate type.

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* Fix traceback handling - thanks Changaco

* Fix 267 - 404 on requests for .spt files