Publish wheels for Python 3.12+ using abi3

[kampersanda]

Summary

This PR updates packaging and CI so vibrato can publish wheels usable on Python 3.12, 3.13, and 3.14.

It switches the extension module to PyO3 abi3 with a minimum supported Python version of 3.10, allowing one cp310-abi3 wheel to work across supported CPython versions instead of building a separate wheel for each minor version.

Changes

• enable pyo3 abi3-py310
• set requires-python = ">=3.10"
• add dynamic = ["version"] for maturin
• update the maturin build requirement to >=1,<2
• test on Python 3.10 through 3.14
• build release wheels once per platform/architecture
• remove setup-python from the sdist job
• update GitHub Actions to checkout@v6 and setup-python@v6
• switch publishing from maturin upload to uv publish with Trusted Publishing
• fix TokenIterator to fully implement the Python iterator protocol
• update doctest version examples from 0.5.1 to 0.5.2

Requests

• Request wheel files for Python 3.12 and later #13

[Copilot]

Pull request overview

Updates the packaging and CI configuration for python-vibrato to publish a single cp38-abi3 wheel per platform (usable across newer CPython versions), while also aligning docs/examples and fixing iterator behavior in the PyO3 bindings.

Changes:

• Enable PyO3 abi3-py38 and set requires-python >= 3.8 / dynamic = ["version"] for maturin-based builds.
• Update GitHub Actions CI to test newer Python versions and build release artifacts once per platform/arch.
• Fix TokenIterator to implement __iter__, and refresh doctest version strings.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/lib.rs	Adds TokenIterator.__iter__ to satisfy Python iterator protocol.
Cargo.toml	Enables PyO3 abi3-py38 for stable ABI wheels.
pyproject.toml	Updates maturin build requirement, declares dynamic version, and sets requires-python.
README.md	Updates doctest version string.
docs/source/examples.rst	Updates doctest version string.
.gitignore	Ignores Rust build artifacts and lockfile.
.github/workflows/CI.yml	Expands Python test matrix and revises release packaging steps/artifact naming.

Comments suppressed due to low confidence (1)

.github/workflows/CI.yml:147

• The release job downloads artifacts without specifying an output path. Depending on download-artifact defaults, this can create per-artifact subdirectories and make the later upload glob (*) brittle (e.g., attempting to upload directories). Consider downloading everything into a dedicated directory (like dist/) with merge-multiple: true, and uploading dist/* explicitly.

      - uses: actions/download-artifact@v4
        with:
          name: sdist
      - uses: actions/download-artifact@v4
        with:
          pattern: wheels-*
          merge-multiple: true
      - name: Publish to PyPI

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[vbkaisetsu]

Did you confirm the behavior of this command?

uv publish uploads dist/* by default, but it looks like artifacts are downloaded under dist/wheels-*/