For anybody who yearns for the heyday of cabarets and supper clubs, there's an updated version that was recently opened by Atlanta native Libby Whittemore, a longtime performer on the local scene. The shows combine music, humor, and chat by the lively red-headed Ms. Whittemore, a talented, wisecracking diva who's funny as hell. Libby's seems to have filled a void in the night-life scene for grownups, but there's also a gospel brunch on Sunday afternoon for those who don't like to stay up late.