Typing definitions

[Mattwmaster58]

What are your thoughts on upgrading the typing definitions? For example the old style dict or None could be changed to Optional[dict]. Of course, this will add one more requirement and an import statement in every file with update definintions.

[Anthony Forsberg]

I only use dict or None in two functions so changing those and adding additional requirements seems a little heavy handed for something with no real benefit.

Though it did make me notice that I have dict or None but then expect only dict in one function.

Last time I messed about with type definitions I cast aside Python 2 compatibility which cost me no end of trouble.