async python support

[Trolldemorted]

Is your feature request related to a problem? Please describe.
I have a larger async python app, and I'd like to establish signalr connections without blocking my event loop. To my best knowledge, right now using signalrcore methods would block my event loop, and thus block my entire app.

Describe the solution you'd like
There is an interface that allows me to connect and send messages asynchronously. All handlers can be asynchronous functions.

[mandrewcito]

It will be a nice good feature. i will add it to the current roadmap. I think that "signalrcore.aio" will be a nice package path