Update 50 named items

Secret of Saltmarsh
New ingredients:

What drops where
 * amethyst loupe and duelist's epee drop in haunting of saltmarsh
 * Driftwood bracers drop in rest for the night
 * crocodile tooth, crocodile skin boots drop in swim at your own risk
 * silver pocketwatch drops in down you go
 * snakeskin belt drops in danger at dunwater
 * Goldcursed dagger drops in back to basics
 * cinderfingers drops in what sleeps below
 * skullduggery cap drops in final enemy
 * Sapphire Spyglass is in Haunting of Saltmarsh, in both Alchemist and end chests.
 * Sapphire spyglass is a minor artifact, it can drop in any chest
 * Sir Squilliam III, Esq. drops in Under the Cover of Darkness
 * Duelist's epee drops in Haunting of Saltmarsh
 * Skull of the Sea drops from explorer chests
 * Anchorchain drops in Rest for the Night
 * Smash 'n Grabber drops in What Sleeps Below
 * Scalegouger drops in Danger at Dunwater
 * Marshreed cloak drops in Hijacked Haul
 * Ship-mage's attire drops in Final Enemy
 * Saltorion Bracers drops in What Sleeps Below