d so “that the maintenance of the suit 349 FEDERAL SUPPLEMENT, 2d SERIES does not offend traditional notions of fair play and substantial justice.” Intl Shoe Co. v. Washington, 326 U.S. 310, 316, 66 S.Ct. 154, 90 L.Ed. 95 (1945); see also World-Wide Volkswagen Corp. v. Wood- son, 444 U.S. 286, 292, 100 S.C