Is-it-christmas

In the previous version I had the function in `__init__.py`. I could not successfully run `import is_it_christmas` after `pip install is_it_christmas`. So this attempts to replicate what I made in https://github.com/michaelboerman/example_python_package/tree/main.

**Full Changelog**: https://github.com/michaelboerman/is_it_christmas/compare/0.0.2...0.03

**Full Changelog**: https://github.com/michaelboerman/is_it_christmas/compare/0.0.1...0.0.2

Initial Release into the world. Tell me -- is it Christmas?!?!

**Full Changelog**: https://github.com/michaelboerman/is_it_christmas/commits/0.0.1