Python 3.14: Cool New Features

[bzaczynski]

Where to put new files:

• New files should go into a top-level subfolder, named after the article slug. For example: my-awesome-article

How to merge your changes:

1. Make sure the CI code style tests all pass (+ run the automatic code formatter if necessary).
2. Find an RP Team member on Slack and ask them to review & approve your PR.
3. Once the PR has one positive ("approved") review, GitHub lets you merge the PR.
4. 🎉

[lpozo]

@bzaczynski Hey! Only one comment below. Thanks!

[lpozo]

In the tutorial, we could mention that the sample files used to showcase the REPL's syntax highlighting features are available in the materials repo?