Tom Stoppard, the award-winning playwright and screenwriter whose intellectually challenging dramas made him one of the leading writers of the stage, has died, according to The Guardian. He was 88. Stoppard wrote more than 30 plays, building a body of work that blended big ideas with theatricality. His breakthrough Rosencrantz and Guildenstern Are Dead was first staged at the Edinburgh Fringe Festival in 1966. It th…