HBO has unveiled the list of films and TV shows that will be newly available to the streaming service HBO NOW in April, as well as those that will be departing. For those unaware, HBO NOW is the standalone streaming service for HBO, with which you can not only watch past and current seasons of HBO original programming, but also a number of library titles. In the “new release” aisle this month, Spike Lee’s Oscar-winning BlacKkKlansman debuts on April 20th, while the smash hit romantic comedy Crazy Rich Asians arrives on April 13th, the horror film The Nun …