Support for Python 3.10

[robertmrk]

Support for Python 3.10

[Z3R021]

@rjjanuary, I was able to get it to work locally with 3.10 by just dropping that param and you are correct that it is easy. Definitely be a breaking change with it then requiring 3.10. We just implemented the aiosfstream project and had to put it on 3.9.

[Andrei-Pozolotin]

1. works in this fork:
   https://github.com/random-python/x_aiocometd

2. use with pip via requirements.txt:

### aiocometd == 0.4.5 ### disable
aiocometd @ git+https://github.com/random-python/x_aiocometd@develop ### enalbe

[syphar]

@robertmrk what would be the way forward here?

I admit I don't know asyncio in that much detail, but I assume that the loop parameter is just not needed any more here? Or why else would they remove it?

Or would you accept a PR that just checks the python version and omits the loop from the initialization for >3.10?

[stefanmohl]

There hasn't been any activity from the maintainer for 4-5 years now. Perhaps @Andrei-Pozolotin could open his https://github.com/random-python/x_aiocometd repo for issue posting and we continue there?