Screen a species list against the species registers held, in one call

Up to 500 names, each answered by find_designations itself: its designations with their cites and the registers searched that are silent on it with what each one's silence means, or its own coded refusal (designations.none_held = no register searched names it, a statement about these registers and never that the species is unprotected; species.ambiguous with candidates; species.unreadable). A register's instrument, title, edition, place, note for the place, source URL and sha256 are sent once, in registers: a designation, its cite or a silent entry leaves out a field only where its value is the register's. A designation without outcome_says says outcomes[outcome]; a reconciled name without source is read from backbone. summary counts the names listed, listed only under a population or subspecies, watch-listed, named but listed by none, named by no register, ambiguous and refused, and how many names each register lists. Use it instead of one call a name: the door allows 30 calls in 10 seconds.