TimeFrame.split now returns a generator of timeframes. #306
TimeFrame.split now returns a generator of timeframes. #306

HarllanAndrye/nilmtk,mmottahedi/nilmtk,josemao/nilmtk,jaduimstra/nilmtk,pauldeng/nilmtk,nilmtk/nilmtk,nilmtk/nilmtk,AlexRobson/nilmtk