Adds a task index (how do I...?) and a complete methods reference for str/list/tuple/dict/set, on top of the quick tables and A-Z index.

Every notebook starts with a quick summary table, the A-Z index covers all built-ins and methods, and the whole repository is English only.

Adds 16 notebooks (match/case, collections, pathlib, JSON, CSV, logging, testing and more), renumbers sections into their logical places, and adds quick tables and an A-Z index.

Adds part 11 (comprehensions, 5 notebooks) and part 12 (itertools, 8 notebooks) and extends the unified Kaggle notebook to 12 parts.

First public release: 10 parts (fundamentals to type hinting), 58 offline notebooks and the unified Kaggle notebook.