With just a few days until the release of “Avengers: Endgame,” Marvel fans everywhere are probably wondering A) Who dies?? and B) Will this actually resolve the cliffhanger ending of “Infinity War” in a satisfying way? So, just to get it out of the way: A) I’m not telling, and B) Kind of? Mostly? It depends? Certainly, if you’re like me and found yourself fatigued by the constant, overcrowded battles of “Infinity War,”the beginning of “Endgame” will come as an enormous relief.There’s a brief...