Pnwkit-py

What's Changed
* Corrected nullable datetimes in nation model by DukeAbigor in https://github.com/mrvillage/pnwkit-py/pull/18

New Contributors
* DukeAbigor made their first contribution in https://github.com/mrvillage/pnwkit-py/pull/18

**Full Changelog**: https://github.com/mrvillage/pnwkit-py/compare/v2.6.25...v2.6.26

What's Changed
* Some things that were added to API, but haven't been added here since by JacobKnox in https://github.com/mrvillage/pnwkit-py/pull/17


**Full Changelog**: https://github.com/mrvillage/pnwkit-py/compare/v2.6.24...v2.6.25

- Coerce `datetime.datetime` objects into the API-expected format when passed as arguments to a query.

- Fix types for freeform arrays

- Allow freeform arrays

- Support freeform JSON