The Deutsche Oper am Rhein has announced its 2018-19 season, featuring 10 new productions and a number of rising stars. The season will also include a number of opera favorites, rarely performed works, and modern masterpieces. Here is a look. Premieres Suzanne Andrade and Esme Appleton direct a new double bill featuring Stravinsky’s “Petrushka” and Ravel’s “L’Enfant et Les Sortileges.” Tiago Alexandre Fonseca, Pauliina {…}