3.0.2

Changed

• orjson.dumps() does not serialize dataclasses.dataclass attributes
  that begin with a leading underscore, e.g., _attr. This is because of the
  Python idiom that a leading underscores marks an attribute as "private."
• orjson.dumps() does not serialize dataclasses.dataclass attributes that
  are InitVar or ClassVar whether using __slots__ or not.