Dior Couture Returns to Historical Roots By KELIN DILLON Perennial French fashion house Dior, now headed by Maria Grazia Chiuri, released its spring couture line last week, transporting lovers of all things sartorial back in time to a bygone era — a welcome escape from the torrid landscape of coronavirus-tinged modern life-as-we-know-it. Chiuri’s latest design effort harkens back to the