This avoids the following error if DeprecationWarnings are ignored.
======================================================================
ERROR: test_entry_points_by_index (test.test_importlib.test_metadata_api.APITests)
Prior versions of Distribution.entry_points would return a
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Traceback (most recent call last):
File "/builddir/build/BUILD/Python-3.10.0b3/Lib/test/test_importlib/test_metadata_api.py", line 145, in test_entry_points_by_index
expected = next(iter(caught))
StopIteration
----------------------------------------------------------------------
Ran 1402 tests in 2.125s
FAILED (errors=1, skipped=18, expected failures=1)
* bpo-43926: Cleaner metadata with PEP 566 JSON support.
* Add blurb
* Add versionchanged and versionadded declarations for changes to metadata.
* Use descriptor for PEP 566
* bpo-42382: In importlib.metadata, `EntryPoint` objects now expose a `.dist` object referencing the `Distribution` when constructed from a `Distribution`.
Also, sync importlib_metadata 3.3:
- Add support for package discovery under package normalization rules.
- The object returned by `metadata()` now has a formally-defined protocol called `PackageMetadata` with declared support for the `.get_all()` method.
* Add blurb
* Remove latent footnote.