Changed algo to greatly reduce RAM usage. Now also need the input file sorted by subject
Changed algo to greatly reduce RAM usage. Now also need the input file sorted by subject

ppericard/matam,bonsai-team/matam,ppericard/matam,ppericard/matamog,ppericard/matamog,ppericard/matam,bonsai-team/matam,ppericard/matamog,bonsai-team/matam,bonsai-team/matam,ppericard/matamog