It wasn't even four months ago that HBO announced that Oscar Isaac and Michelle Williams would star in its remake of Ingmar Bergman's Scenes from a Marriage, and now Williams has bowed out due to scheduling issues, and the equally talented Jessica Chastain has signed on to take her place. The original six-episode series starred Liv Ullmann and Erland Josephson and aired on Swedish television in 1973, and has since been canonized as part of The Criterion Collection. The modern remake will explore many of the same themes -- love, hate, marriage, divorce, and, of course, monogamy -- through …