If there’s a better, more vital way to honor the late, incomparable Stephen Sondheim than Marianne Elliott’s superb production of Company, Broadway hasn’t invented it. This gorgeous revival of the Sondheim-George Furth masterwork at the Bernard B. Jacobs Theatre, is, from across-the-board excellent performances and thoughtful revisions to the visual delight of a lovely and ingeniously clever set design, a gift both to and from the genius we lost last month.