Update README

README.rst

@@ -17,21 +17,18 @@ asyncio-compatible timeout context manager.
 DEPRECATED
 ----------
 
-This library has effectively been upstreamed into Python 3.11+. Therefore this library
-is considered deprecated and no longer supported. We'll keep the project open in the
-unlikely case of security issues until Python 3.10 is officially unsupported.
+This library has effectively been upstreamed into Python 3.11+.
 
-To migrate a project that needs to support multiple Python versions, we suggest
-using this code (used in our other projects, such as aiohttp)::
+Therefore this library is considered deprecated and no longer actively supported.
 
-   if sys.version_info >= (3, 11):
-       import asyncio as async_timeout
-   else:
-       import async_timeout
+Version 5.0+ provides dual-mode when executed on Python 3.11+:
+``asyncio_timeout.Timeout`` is fully compatible with ``asyncio.Timeout`` *and* old
+versions of the library.
 
-Then in your dependencies, use::
+Anyway, using upstream is highly recommended. ``asyncio_timeout`` exists only for the
+sake of backward compatibility, easy supporting both old and new Python by the same
+code, and easy misgration.
 
-   async-timeout >= 4; python_version < "3.11"
 
 Usage example
 -------------

async_timeout/__init__.py

@@ -5,18 +5,7 @@
 from typing import Optional, Type, final
 
 
-if sys.version_info >= (3, 11):
-
-    def _uncancel_task(task: "asyncio.Task[object]") -> None:
-        task.uncancel()
-
-else:
-
-    def _uncancel_task(task: "asyncio.Task[object]") -> None:
-        pass
-
-
-__version__ = "4.0.3"
+__version__ = "5.0.0"
 
 
 __all__ = ("timeout", "timeout_at", "Timeout")
@@ -271,7 +260,6 @@ def _do_enter(self) -> None:
         def _do_exit(self, exc_type: Optional[Type[BaseException]]) -> None:
             if exc_type is asyncio.CancelledError and self._state == _State.TIMEOUT:
                 assert self._task is not None
-                _uncancel_task(self._task)
                 self._timeout_handler = None
                 self._task = None
                 raise asyncio.TimeoutError