MADRID( Reuters)-Spanish police have discovered the bodies of a woman, her husband and their two young children in what authorities believe was a disturbing new case of gender-based violence, allegedly committed by the husband before taking his own life.... It did not provide details on how the four died.... StarPicks Popular BookFest kicks off( Reporting by Emma Pinedo and Joan Faus; writing by Andrei Khalip; Editing by Leslie Adler)....