- Update to version 4.2.0
* Re-export `typing.Unpack` and `typing.TypeVarTuple` on Python 3.11.
* Add `ParamSpecArgs` and `ParamSpecKwargs` to `__all__`.
* Improve "accepts only single type" error messages.
* Improve the distributed package. Patch by Marc Mueller (@cdce8p).
* Update `typing_extensions.dataclass_transform` to rename the
`field_descriptors` parameter to `field_specifiers` and accept
arbitrary keyword arguments.
* Add `typing_extensions.get_overloads` and
`typing_extensions.clear_overloads`, and add registry support to
`typing_extensions.overload`. Backport from python/cpython#89263.
* Add `typing_extensions.assert_type`. Backport from bpo-46480.
* Drop support for Python 3.6. Original patch by Adam Turner (@AA-Turner).
- from version 4.1.1
* Fix importing `typing_extensions` on Python 3.7.0 and 3.7.1. Original
patch by Nikita Sobolev (@sobolevn).
- from version 4.1.0
* Runtime support for PEP 646, adding `typing_extensions.TypeVarTuple`
and `typing_extensions.Unpack`.
* Add interaction of `Required` and `NotRequired` with `__required_keys__`,
`__optional_keys__` and `get_type_hints()`. Patch by David Cabot (@d-k-bo).
* Runtime support for PEP 675 and `typing_extensions.LiteralString`.
* Add `Never` and `assert_never`. Backport from bpo-46475.
* `ParamSpec` args and kwargs are now equal to themselves. Backport from
bpo-46676. Patch by Gregory Beauregard (@GBeauregard).
* Add `reveal_type`. Backport from bpo-46414.
* Runtime support for PEP 681 and `typing_extensions.dataclass_transform`.
* `Annotated` can now wrap `ClassVar` and `Final`. Backport from
bpo-46491. Patch by Gregory Beauregard (@GBeauregard).
* Add missed `Required` and `NotRequired` to `__all__`. Patch by