VATICAN CITY — Pope Francis insisted that individual conscience be the guiding principle for Catholics negotiating the complexities of sex, marriage and family life in a major document released Friday that rejects the emphasis on black and white rules for the faithful.In the 256-page document "The Joy of Love," Francis makes no change in church doctrine and strongly upholds that marriage is a lifelong commitment.But in selectively citing his predecessors and emphasizing his own teachings, Francis makes clear that he wants nothing short of a revolution in the way priests accompany Catholics, saying the church must no longer sit in judgment and "throw stones" against those who fail to live up to the Gospel's ideals of marriage and family life."I understand those who prefer a more rigorous pastoral care which leaves no room for confusion," he wrote.