Async code across Python versions

[Albert-Jan Roskam]

   Hi,
   I just started using async functions and I was wondering if there are any
   best practices to deal with developments in this area for Python 3.6 and
   up. I'm currently using Python 3.6 but I hope I can upgrade to 3.8 soon.
   Do I have to worry that my code might break? If so, is it better to use
   3rd party libraries? It seems that things get a little easier with newer
   Python versions, so it might also a reason to simplify the code.
   Cheers!
   Albert-Jan