It wasn’t merely the best of times. It wasn’t just the worst. Certainly both were true about Marcus Camby’s basketball career at the University of Massachusetts in the mid-1990s — true in a Dickensian way — but it was more than that. It was the most compelling of times. There was UMass, not far removed from 11 consecutive losing seasons (and 29 straight losses at one point) becoming a national force: No. 1 ranking, a 26-0 record to start the 1995-96 season, an unforgettable run to the Final Four.