Tatsu

* validate with Python 3.12 (313)
* drop support for Python 3.10 (313)
* move build configuration to `pyproject.toml` (316 317)
* evaluate constant to a Python literal when possible (304 320)
* fix `comments_re` and `eol_comments_re` so they effectively can be `None` (307 312 314)
* skip over whitespace and comments before memoizing (305 306 309 318)
* verify that `()` parses to `None` or is ignored (308)

This release makes TatSu compatible with Python >= 3.8, but still states that the compatible version is Python >= 3.10.

* Fix walker cache logic in ``NodeWalker`` (by-Exist)

- Fix pickling of AST. The change also affects parsing within multiprocessing (fizbin)
- Fall back to `repr()` for types not handled by `json`(dnicolodi)
- Ensure there is exactly one method cache per Walker class
- Bug fixes, upgrades, and improvements by (dnicolodi)

- Make sure that the generated parser is the same as the bootstrap
parser.
- Honor grouping in pattern expressions with the semantics of
`re.findall(pattern, text)[0]`. Now groups that should not be
returned when parsing should use the `(?:)` syntax. Now patterns
align with [Python](http://python.org) `re` independently of the
`ignorecase` setting for the grammar.
- Allow `{}` interpolation in `` `constant ``[ expressions with the
semantics of ]{.title-ref}[str.format()]{.title-ref}\`
- Add ``[constant]{.title-ref}`` as a multiline version of
`` `constant ``\`.
- Add \^``[constant]{.title-ref}`` and \^`` `constant ``[ as syntax
for an \`alert]{.title-ref} expression. Alerts produce no tokens bug
get registed in [parseinfo]{.title-ref} records.
- BUG: make the `->` skip expression always stop at EOF.
- Make the `->` skip expression go over comments, and not log while
skipping.
- Patch problem with pickling `FailedCut` while running parsing in
parallel.
- Optimize model pickling and parallel processing to reduce runtime
and memory use with `parproc`
- Add a representation of `~` cut expressions to parse traces