Gainesville Mayor Danny Dunagan officially announced at Thursday’s City Council work session his plan to resign as mayor at the end of August so he can run to become the city’s first elected mayor in November. Dunagan, owner of Three D Cleaners, was elected to the council in 2006, defeating former Hall County Commissioner Ashley Bell. He was appointed mayor by his fellow council members in January 2012, a position that has rotated between council members every two years.