m._maxscore() -- Sets self.maxscore and self.minscore

def _maxscore(self):
        """
        m._maxscore() -- Sets self.maxscore and self.minscore 
        """
        total = 0
        lowtot= 0
        for lli in self.ll:
            total = total + max(lli.values())
            lowtot= lowtot+ min(lli.values())
        self.maxscore = total
        self.minscore = lowtot