1# Unreleased
2
3- Add `typing.assert_type`. Backport from bpo-46480.
4- Drop support for Python 3.6. Original patch by Adam Turner (@AA-Turner).
5
6# Release 4.1.1 (February 13, 2022)
7
8- Fix importing `typing_extensions` on Python 3.7.0 and 3.7.1. Original
9  patch by Nikita Sobolev (@sobolevn).
10
11# Release 4.1.0 (February 12, 2022)
12
13- Runtime support for PEP 646, adding `typing_extensions.TypeVarTuple`
14  and `typing_extensions.Unpack`.
15- Add interaction of `Required` and `NotRequired` with `__required_keys__`,
16  `__optional_keys__` and `get_type_hints()`. Patch by David Cabot (@d-k-bo).
17- Runtime support for PEP 675 and `typing_extensions.LiteralString`.
18- Add `Never` and `assert_never`. Backport from bpo-46475.
19- `ParamSpec` args and kwargs are now equal to themselves. Backport from
20  bpo-46676. Patch by Gregory Beauregard (@GBeauregard).
21- Add `reveal_type`. Backport from bpo-46414.
22- Runtime support for PEP 681 and `typing_extensions.dataclass_transform`.
23- `Annotated` can now wrap `ClassVar` and `Final`. Backport from
24  bpo-46491. Patch by Gregory Beauregard (@GBeauregard).
25- Add missed `Required` and `NotRequired` to `__all__`. Patch by
26  Yuri Karabas (@uriyyo).
27- The `@final` decorator now sets the `__final__` attribute on the
28  decorated object to allow runtime introspection. Backport from
29  bpo-46342.
30- Add `is_typeddict`. Patch by Chris Moradi (@chrismoradi) and James
31  Hilton-Balfe (@Gobot1234).
32
33# Release 4.0.1 (November 30, 2021)
34
35- Fix broken sdist in release 4.0.0. Patch by Adam Turner (@AA-Turner).
36- Fix equality comparison for `Required` and `NotRequired`. Patch by
37  Jelle Zijlstra (@jellezijlstra).
38- Fix usage of `Self` as a type argument. Patch by Chris Wesseling
39  (@CharString) and James Hilton-Balfe (@Gobot1234).
40
41# Release 4.0.0 (November 14, 2021)
42
43- Starting with version 4.0.0, typing_extensions uses Semantic Versioning.
44  See the README for more information.
45- Dropped support for Python versions 3.5 and older, including Python 2.7.
46- Simplified backports for Python 3.6.0 and newer. Patch by Adam Turner (@AA-Turner).
47
48## Added in version 4.0.0
49
50- Runtime support for PEP 673 and `typing_extensions.Self`. Patch by
51  James Hilton-Balfe (@Gobot1234).
52- Runtime support for PEP 655 and `typing_extensions.Required` and `NotRequired`.
53  Patch by David Foster (@davidfstr).
54
55## Removed in version 4.0.0
56
57The following non-exported but non-private names have been removed as they are
58unneeded for supporting Python 3.6 and newer.
59
60- TypingMeta
61- OLD_GENERICS
62- SUBS_TREE
63- HAVE_ANNOTATED
64- HAVE_PROTOCOLS
65- V_co
66- VT_co
67
68# Previous releases
69
70Prior to release 4.0.0 we did not provide a changelog. Please check
71the Git history for details.
72