Minor update to HowToUsePyparsing.rst

Address warnings in test_simple_unit.py and lucene_grammar.py raised …

…when running with Python 3.12.

Prep for release

Support Python 3.12

Staging for 3.1.0a1 release

Back out Lox language parser (from Crafting Interpreters, by Robert N…

…ystrom)

Added show_groups arg to create_diagram; prep for release

Fixed IndentedBlock internal parse action to use correct value of cur

Add warning suppression detection for all diagnostic warnings

Semi-fix collision of Dict and typing.Dict; Some mypy types cleanup