skip the inventory_units attributes since this is adding extra line_items to orders
return error response when the items count in the posted Shipping object does not match the line_items count on the order
Find and call correct state_machine event, if a state change is requested in the update_shipment_handler
Drop byebug
check on received and existing line items and return error when they do not match on sku and quantity
generate honeybadger alert if a response is a 500

until we can find a better way