Yasoo

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- Enums are now serialized by name, not by value.
- Enum deserialization falls back to value lookup, for backwards compatibility.

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- Enabled ignoring the custom deserializer of just the outermost object.

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- Allowing temporary de-registration of (de)serializers.
- When deserializing, can ignore extra fields instead of failing.

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- Supporting forward references in type hints.

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- Improved performance using caching.

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- Fixed a bug where deserialization of an iterable with a type hint could cause ``None`` values to be added to the iterable.