x3.1: The Caffeine Update

This is x++ version 3.1.2.
Changes include rewriting Caffeine, and modernizing a couple files to prepare for x3.2.

List of changes:

• Rewrite Caffeine into an X++ to Python conversion system.
  • Covers 100% of the x++ API, aside from importing (coming soon).
  • Automatic minification of resulting Python code via python-minifier.
  • Supports building Python code via pyinstaller.
• Migrates the Datastore class to use Python 3.10's match-case feature.
• Begins integrating pathlib into the import system.
• Update all copyright notices to 2024.

Full Changelog: x3.0.0...x3.1.2