Added named tuple DrilldownItem (not public)
Added named tuple DrilldownItem (not public)

noyeitan/cubes,zejn/cubes,pombredanne/cubes,jell0720/cubes,cesarmarinhorj/cubes,she11c0de/cubes,she11c0de/cubes,she11c0de/cubes,noyeitan/cubes,zejn/cubes,cesarmarinhorj/cubes,ubreddy/cubes,zejn/cubes,pombredanne/cubes,jell0720/cubes,cesarmarinhorj/cubes,noyeitan/cubes,jell0720/cubes,pombredanne/cubes,ubreddy/cubes,ubreddy/cubes