* Use built in queue log handlers to avoid formatting logs in the event loop
Logging is now formatted and written in another thread to
ensure there is minimal impact on the event loop when
a log message is processed.
This change replaces the existing AsyncHandler log handler
as python 3.7+ now offers an off the shelf solution
* add a simple test
* s/async_migrate_log_handlers_to_queue/async_activate_log_queue_handler/g