Disney’s new Mulan, which just debuted (for a premium!) on Disney+, is easily one of the very best live-action adaptations of one of their beloved animated classics. It’s a muscular historical action movie, full of gorgeous cinematography (actually shot on location!) and great performances (anchored by an amazing Liu Yifei in the title role). And unlike some other live-action remakes (we’re looking at you, Beauty and the Beast), it isn’t a shot-for-shot recreation and instead strays far from the source material in several key areas. These aren’t necessarily bad changes, after …