Changed

• Add Python 3.14 free-threaded Windows x86_64 wheel
• Improve serialization performance
• Update dependencies

Fixed

• Fix unpackb crash on Windows with Python 3.14 free-threaded and
  on Linux s390x (#499)

Changed

• Revamp the documentation. The documentation is now generated with
  Sphinx and is available at https://ormsgpack.readthedocs.io

Fixed

• Fix serialization of pydantic models with extra fields (#472)

Changed

• Drop support for Python 3.9
• Add packb option OPT_REPLACE_SURROGATES to serialize strings that contain
  surrogate code points

Fixed

• Serialize mutable objects inside a critical section in free threading

Changed

• Add support for Python 3.14
• Add support for free-threading and subinterpreters
• Add Windows arm64 wheels by JexinSam in #412

Changed

• Port to PyPy 3.11 and GraalPy 3.11
• Add support for bytearray and memoryview types by littledivy in #374
• Add packb and unpackb option OPT_DATETIME_AS_TIMESTAMP_EXT to serialize aware datetime objects to timestamp extension objects and deserialize timestamp extension objects to UTC datetime objects, respectively #378

Changed

• Add musllinux wheels #366

Changed

• Add packb option OPT_PASSTHROUGH_ENUM to enable passthrough of Enum objects by hinthornw in #361
• Add PyInstaller hook #354
• Update dependencies

Fixed

• packb now rejects dictionary keys with nested dataclasses or pydantic models

Changed

• Add packb option OPT_PASSTHROUGH_UUID to enable passthrough of UUID objects #338
• Update dependencies

Fixed

• Detect Pydantic 2.10 models #311
• Fix serialization of dataclasses without __slots__ and with a field defined
  with a descriptor object as default value, a field defined with init=False
  and a default value, or a cached property

Changed

• Drop support for Python 3.8
• Support OPT_SORT_KEYS also for Pydantic models #312
• Improve deserialization performance

Fixed

• Deduplicate map keys also when OPT_NON_STR_KEYS is set #279
• Add missing type information for Ext type by trim21 in #285
• Fix type annotation of unpackb first argument

Changed

• Add support for python 3.13
• Improve test coverage