• Add support for Generic Struct types (#386, #393).
• Add support for Generic dataclasses and attrs types (#396).
• Add support for Generic typing.TypedDict and typing.NamedTuple types (#398).
• BREAKING: No longer normalize timezones to UTC when decoding datetime objects from JSON (#391).
• Support decoding unhyphenated UUIDs (#392).
• A few type annotation fixups (#383, #387).
• Dedent docstrings for descriptions when generating JSON schemas (#397).
• Use a variant of __qualname__ when auto-generating Struct tags rather than __name__ (#399).
• Fix bug when handling typing.Literal types containing a literal None (#400).
• Make all Encoder/Decoder methods threadsafe (#402).
• BREAKING: Drop the write_buffer_size kwarg to Encoder (#402).