v0.3.1

Added

• Non-null Field Support: Added :non_null and :nullable options to gql_object and gql_fields macros
  • Fields can be marked as non_null by passing non_null: [:field1, :field2] option
  • The :nullable option takes precedence and can override fields marked as non-null
  • Non-null wrapping is automatically skipped for input_object types (input fields remain nullable)