Selena Gomez has released some of the most interesting pop music this year. She kicked things off with “Bad Liar,” a plucky, stripped-down song that samples the Talking Heads’ 1977 hit “Psycho Killer.” Then, there was “Fetish,” a lush, electro/hip-hop jam with a featured rap from Gucci Mane. Now she’s hitting us with “Wolves,” an…