Add py.typed marker

[dorak88783]

After the addition of typing information, it'd be nice to add a py.typed marker file (https://peps.python.org/pep-0561/)

[MartinPacker]

Do "we" prereq 3.7? Do "we" need to? (My code that builds on python-pptx already goes beyond that - to 3.8 - using the Walrus operator.)

[scanny]

@dorak88783 Yep, it occurred to me over the weekend I'd left out that critical last step after the marathon of type annotation! Adding in a maintenance release here: #1001

[scanny]

@MartinPacker where are you seeing 3.7? I was figuring to support 3.8 at the earliest, just because some Linux distros might still ship with that.

[scanny]

@MartinPacker I checked PyPI and all seems to be in order that this release requires 3.8 as a minimum. If folks need older than that they can pin to a prior version. My plan is to support only supported Python versions with each release.

[MartinPacker]

@scanny there was a link that suggested 3.7. I'm hoping we're way beyond that. As to whether features such as Walrus Operators are exploited (or useful) I couldn't say.

[scanny]

Can you point me to the link @MartinPacker ?

[MartinPacker]

This one (above) https://peps.python.org/pep-0561/

[scanny]

Ah okay, I think I see what you're saying now @MartinPacker. Yes, we start "official" support at Python 3.8 (first version tested) so I think we're good on that :)