v1.0

• Added inheritance of Object type settings (e.g. constructors, allow_extra_fields, etc.)
• Added support for ordering Object type attributes
• Updated Optional to support generating load_default/dump_default values instead of
  using fixed values. E.g. you can have your "id" field to default to auto-generated UUID.
• Added type registry with delayed type resolving. This allows having types that
  reference each other (e.g. Person being author to multiple Books and Book having
  author)
• Updated Object only/exclude to not affect own fields
• Added Transform modifier type
• Added validated_type() function to simplify creation of new types that are actually
  just existing type with an extra validator(s).
• Fixed Object.load_into processing of None values
• Fixed Object.load_into not annotating errors with field names
• Fixed typos in Tuple type, added tests