Quart

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* Raise startup and shutdown errors.
* Allow loading of environment variables into the config.
* Bugfix switch to Werkzeug's redirect.
* Bugfix import Markup and escape from MarkupSafe.

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* Bugfix ensure auth is sent on test client requests.

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* Bugfix await background task shutdown after shutdown funcs.
* Bugfix use the before websocket not request funcs.

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* Add missing serving exception handling.

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* Support an auth argument in the test client.
* Support Python 3.10.
* Utilise ensure_async in the copy context functions.
* Add support for background tasks via ``app.add_background_task``.
* Give a clearer error for invalid response types.
* Make open_resource and open_instance_resource async.
* Allow save_session to accept None as a response value.
* Rename errors to have an ``Error`` suffix.
* Bugfix typing of before (first) request callables.
* Bugfix support view sync handlers.
* Bugfix import of method "redirect" from flask.
* Bugfix registering a blueprint twice with differing names.
* Bugfix support ctx.pop() without passing exc explicitly.
* Bugfix a request timeout error should be raised on timeout.
* Bugfix remove jinja warnings.
* Bugfix use the websocket context in the websocket method.
* Bugfix raise any lifespan startup failures when testing.
* Bugfix handler call order based on blueprint nesting.
* Bugfix allow for generators that yield strings to be used.
* Bugfix reorder acceptance to prevent race conditions.
* Bugfix prevent multiple task form body parsing via a lock.

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* Improve the ``g`` AppGlobals typing.
* Bugfix nested blueprint url_prefixes.
* Bugfix ensure the session is created before url matching.
* Bugfix Flask Patch sync wrapping async.
* Bugfix don't try an parse the form data multiple times.
* Bugfix blueprint naming allowing blueprints to be registered with a
different name.
* Bugfix teardown callable typing.