Release Version 21.12.0 · sanic-org/sanic

#2260 Allow early Blueprint registrations to still apply later added objects
#2262 Noisy exceptions - force logging of all exceptions
#2264 Optional uvloop by configuration
#2270 Vhost support using multiple TLS certificates
#2277 Change signal routing for increased consistency
- BREAKING CHANGE: If you were manually routing signals there is a breaking change. The signal router's get is no longer 100% determinative. There is now an additional step to loop thru the returned signals for proper matching on the requirements. If signals are being dispatched using app.dispatch or bp.dispatch, there is no change.
#2290 Add contextual exceptions
#2291 Increase join concat performance
#2295, #2316, #2331 Restructure of CLI and application state with new displays and more command parity with app.run
#2302 Add route context at definition time
#2304 Named tasks and new API for managing background tasks
#2307 On app auto-reload, provide insight of changed files
#2308 Auto extend application with Sanic Extensions if it is installed, and provide first class support for accessing the extensions
#2309 Builtin signals changed to Enum
#2313 Support additional config implementation use case
#2321 Refactor environment variable hydration logic
#2327 Prevent sending multiple or mixed responses on a single request
#2330 Custom type casting on environment variables
#2332 Make all deprecation notices consistent
#2335 Allow underscore to start instance names

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