v0.3.0

Unpy can now fully backport any valid Python 3.13 .pyi stub to Python 3.10

What's Changed

• cleanup the import-related code by @jorenham in #19
• detect illegal base classes by @jorenham in #20
• dedupe typevars, code cleanup, better newlines by @jorenham in #21
• bump development dependencies by @jorenham in #22
• --diff flag by @jorenham in #23
• bump tox to 4.20.0 by @jorenham in #24
• some of those "recommended community standards" by @jorenham in #25
• update development dependencies by @jorenham in #26
• something resembling a plan by @jorenham in #27
• basedmypy by @jorenham in #28
• Full rewrite of the import-management system by @jorenham in #29
• update development dependencies by @jorenham in #30
• Full rewrite of the type param code by @jorenham in #56
• improved readme and examples by @jorenham in #62
• fix broken --target by @jorenham in #63
• renaming of backported import references by @jorenham in #67
• backport *Ts to Unpack[Ts] for python<3.11 by @jorenham in #69
• set the default target to 3.10 by @jorenham in #70
• bump basedpyright to 1.18.2 by @jorenham in #71
• update all backported import refs, backport more stdlib names by @jorenham in #73
• bump tox to 4.21 & use native toml config by @jorenham in #74
• improved README.md by @jorenham in #75
• explicitly disallow unsupported base classes by @jorenham in #77
• disallow quoted annotations, __future__ imports, and runtime-only nodes by @jorenham in #78
• disallow module-level __dir__ and __getattr__ functions by @jorenham in #79
• backport nested ClassVar and Final on python<3.13 by @jorenham in #80
• basedpyright 1.18.3 and uv 0.4.8 by @jorenham in #82
• backport enum.StrEnum as str & enum.Enum by @jorenham in #83
• private names for extracted typevar-likes by @jorenham in #85
• explicitly check for unsupported names by @jorenham in #87

Full Changelog: v0.2.1...v0.3.0