- update to 23.1
* chore: add typed classifier
* Improve parser error messaging around mistakes in/around
version specifiers
* Upgrade to latest mypy
* Delete print() from test_tags
* Update our linters
* Improve error for local version label with unsupported operators
* Parse raw metadata
* Handle prefix match with zeros at end of prefix correctly
* Relax typing of _key on _BaseVersion
* Replace spaces in platform names with underscores
* Import underlying parser function as an underscored variable

- Don't use :primary multibuild flavor for non-Tumbleweed
* accomodates special SLE15 projects defininig extra flavors but
not building for primary python3

- Update to v23.0
* Remove unused LPAREN token from tokenizer by @hrnciar in #630
* Reorganise the project layout and version management by
@pradyunsg in #626
* Correctly handle non-normalised specifiers in requirements by
@pradyunsg in #634
* Use stable Python 3.11 in tests by @153957 in #641
* Fix typing for specifiers.BaseSpecifier.filter() by @henryiii
in #643
* Correctly handle trailing whitespace on URL requirements by
@pradyunsg in #642