adding phaseF1s.pl, which uses GATK to phase individuals
New command "merge"
First complete version of "merge" command
Performance improvement: shaved off ~2 mins runtime on 13380 x 149 matrix
renamed from phaseF1s.pl to triadd
Better program description
Updated triadd-merge usage info with message about potential for P0 mis-phasing
GBSpreprocessing.txt now more organized process