Pypi-simple

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- `SUPPORTED_REPOSITORY_VERSION` increased to `"1.3"` for compatibility with
PEP 740

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- Drop support for Python 3.7
- Support PEP 740
- `provenance_sha256` and `provenance_url` fields added to
`DistributionPackage`
- `get_provenance()` method added to `PyPISimple`
- `NoProvenanceError` exception type added
- Add `url` fields to the `DigestMismatchError`, `NoDigestsError`, and
`NoMetadataError` classes

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- **Bugfix**: Fix parsing of "true" `data-core-metadata` attributes and
handling of the attribute's absence (contributed by
[thatch](https://github.com/thatch))
- `DistributionPackage.has_metadata` will now be `None` if this attribute
was absent in the HTML returned by PyPI. Previously, it would be `False`
under this circumstance.
- Added `PyPISimple.get_package_metadata_bytes()` (contributed by
[thatch](https://github.com/thatch))
- `PyPISimple.get_package_metadata()` now always decodes responses as UTF-8
(contributed by [thatch](https://github.com/thatch))
- Request methods now take optional `headers` arguments (contributed by
[thatch](https://github.com/thatch))

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- Migrated from setuptools to hatch
- **Bugfix**: When no `accept` argument is passed to
`PyPISimple.get_project_page()`, actually fall back to the value supplied on
client instantiation, as documented (contributed by
[thatch](https://github.com/thatch))

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- Support PEP 708
- `tracks` and `alternate_locations` attributes added to `ProjectPage`
- `pypi_meta`, `tracks`, and `alternate_locations` attributes added to
`RepositoryPage`
- `SUPPORTED_REPOSITORY_VERSION` increased to `"1.2"`

-------------------
- Support Python 3.12
- Update for PEP 714
- Gave `PyPISimple` a `get_package_metadata()` method
- Added an examples page to the documentation