fix bug that was causing all PlayerSummary objects to share the same stats dictionary
fix bug that was causing all PlayerSummary objects to share the same stats dictionary

GraylinKim/sc2reader,StoicLoofah/sc2reader,ggtracker/sc2reader,vlaufer/sc2reader,GraylinKim/sc2reader,ggtracker/sc2reader,StoicLoofah/sc2reader,vlaufer/sc2reader