We’ve just got word that Sheffield’s brilliant Tramlines festival has added rap legends the Wu-Tang Clan, indie rockers The Charlatans and dance troupe Basement Jaxx as headliners. It’s all going down July 24-26. They’re followed by Mike Skinner, Jimmy Edgar and RnB duo Ekkah, along with another appearance by mathcore outfit Rolo Tomassi. Tramlines festival director Sarah Nulty said of…