Taylor Swift and Scooter Braun's feud is heating up again.The 30-year-old pop star and the 39-year-old music executive have been sparring over the rights to Swift's music for over a year now and everybody from Justin Bieber to Selena Gomez has had something to say about it. Keep reading for a complete timeline of the entire spat.Last June, Braun — through his holding company, Ithaca Holdings — purchased Big Machine Label Group for a reported $300 million.