set model filename, bring coverage filenames in estimateSTR.R into line with pipeline stages
set model filename, bring coverage filenames in estimateSTR.R into line with pipeline stages

hdashnow/STRetch-paper,hdashnow/STRetch-paper,hdashnow/STRetch,Oshlack/STRetch,hdashnow/STRetch-paper,Oshlack/STRetch,Oshlack/STRetch,hdashnow/STRetch