production_version = 0 | 1

// 0 : behaviour as before (now)
// 1 : new behaviour with up to 64 cargoes:

produce( generate(LABEL_1: AMOUNT_1, LABEL_2: AMOUNT_2, ...) )
produce( consume(LABEL_1: AMOUNT_1, LABEL_2: AMOUNT_2, ...) )
produce( consume(...), generate(...))