Bumped up the version

Author: agronholm

docs/versionhistory.rst

@@ -3,7 +3,7 @@ Version history
 
 This library adheres to `Semantic Versioning 2.0 <http://semver.org/>`_.
 
-**UNRELEASED**
+**4.8.0**
 
 - Added **experimental** support for running functions in subinterpreters on Python
   3.13 and later
@@ -13,7 +13,7 @@ This library adheres to `Semantic Versioning 2.0 <http://semver.org/>`_.
   task factory created via ``asyncio.create_eager_task_factory()``, to preserve expected
   Trio-like task scheduling semantics (PR by @agronholm and @graingert)
 - Configure ``SO_RCVBUF``, ``SO_SNDBUF`` and ``TCP_NODELAY`` on the selector
-  thread waker socket pair. This should improve the performance of ``wait_readable()``
+  thread waker socket pair (this should improve the performance of ``wait_readable()``)
   and ``wait_writable()`` when using the ``ProactorEventLoop``
   (`#836 <https://github.com/agronholm/anyio/pull/836>`_; PR by @graingert)
 - Fixed ``AssertionError`` when using ``nest-asyncio``