Release 6.5.0

CHANGES.rst

@@ -14,6 +14,46 @@ Changelog
 
 .. towncrier release notes start
 
+6.5.0
+=====
+
+*(2025-06-17)*
+
+
+Features
+--------
+
+- Replace internal implementation from an array of items to hash table.
+  algorithmic complexity for lookups is switched from O(N) to O(1).
+
+  The hash table is very similar to :class:`dict` from CPython but it allows keys duplication.
+
+  The benchmark shows 25-50% boost for single lookups, x2-x3 for bulk updates, and x20 for
+  some multidict view operations.  The gain is not for free:
+  :class:`~multidict.MultiDict.add` and :class:`~multidict.MultiDict.extend` are 25-50%
+  slower now. We consider it as acceptable because the lookup is much more common
+  operation that addition for the library domain.
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`1128`.
+
+
+Contributor-facing changes
+--------------------------
+
+- Builds have been added for arm64 Windows
+  wheels and the ``reusable-build-wheel.yml``
+  template has been modified to allow for
+  an os value (``windows-11-arm``) which
+  does not end with the ``-latest`` postfix.
+
+  *Related issues and pull requests on GitHub:*
+  :issue:`1167`.
+
+
+----
+
+
 6.4.4
 =====
 

multidict/__init__.py

@@ -22,7 +22,7 @@
     "getversion",
 )
 
-__version__ = "6.4.5.dev0"
+__version__ = "6.5.0"
 
 
 if TYPE_CHECKING or not USE_EXTENSIONS: