Nothing Has Changed is the first David Bowie compilation to bridge “Changes,” “Ziggy Stardust,” and other forever-potent glam anthems of his early years to his most current recordings. He pushed the parameters of pop music with the postmodern sonics of “Sound and Vision” and the dubbed-out funk of “Let’s Dance,” but the secret treasure is tucked at the end. The writhing jazz rhythms and wounded crooning of 2014’s “Sue (Or in a Season of Crime)” show that he never stopped searching for new inventions.