Over a year after Adèle Haenel and Noémie Merlant loosed each other’s corsets and fell in love in a French Cannes film, and less than a week before Saoirse Ronan and Kate Winslet are due to do the same in coastal England at TIFF, Katherine Waterston and Vanessa Kirby play American, mid-19th century secret lesbian lovers in Mona Fastvold‘s Venice competition title “The World to Come,” a beautiful and quiet, seasons-spanning tale of poetry and pining pioneerwomen.