Changes to POST /tax/calculations

the line_items/items/amount_excluding_tax response's property format changed from int32 to no format for status 200

the line_items/items/amount_including_tax response's property format changed from int32 to no format for status 200

the line_items/items/quantity response's property format changed from int32 to no format for status 200

the line_items/items/tax_amount response's property format changed from int32 to no format for status 200

removed the optional property error from the response with the 400 status

removed the optional property request_id from the response with the 400 status

added the optional property line_items/items/line_item_id to the response with the 200 status

added the required property code to the response with the 400 status

added the required property message to the response with the 400 status

added the required property type to the response with the 400 status