qasync allows coroutines to be used in PyQt/PySide applications by providing
an implementation of the PEP 3156 event loop.

With qasync, you can use asyncio functionalities directly inside Qt app's
event loop, in the main thread. Using async functions for Python tasks can
be much easier and cleaner than using threading.Thread or QThread.

If you need some CPU-intensive tasks to be executed in parallel, qasync also
provides QEventLoop.run_in_executor which is functionally identical to that
of asyncio. By default QThreadExecutor is used, but any class implementing
the concurrent.futures.Executor interface will work.

qasync is a fork of asyncqt, which is a fork of quamash. qasync was created
because those are no longer maintained.