Since “Living Single” came to Hulu, I’ve been watching at least a few episodes every day. I wanted to think through a 2018 update of these characters that shaped my ideas of adulthood. Sinclair left Teach for America to work for her cousin Khadijah’s tech startup. Regine recently opened a vintage store in Harlem that specializes in 90s clothing. And, well, Maxine is still a lawyer. God I love this show.