Python < 3.10 not supported

[berghton]

Hi,

Thanks for this great library!

It seems like python < 3.10 is not supported by the library. The issue is with the | operator in the type hints. I believe that operator for type hints was introduced in python 3.10. Also tuple in type hints were introduced in python 3.9.

So if you want to support more python versions you could use Union, Optional and Tuple from the typing library instead. It would definitely help me, and perhaps others as well.

[hanspayer]

I really like your solution. I'm using 3.9 and the type hinting with the pipe operator is not supported. That would help here too.

[niklashenning]

Hi, thanks for letting me know! I'll change this in the next version.