The Academy of Country Music announced that Jason Aldean has been named the ACM Artist of the Decade. The 13-time ACM Award winner—and three-time ACM Entertainer of the Year—joins an exclusive group of past Artist of the Decade winners, including Marty Robbins (1969), Loretta Lynn (1979), Alabama (1988), Garth Brooks (1998) and George Strait (2008).…