add diff-cover to the checklist
add diff-cover to the checklist

ged-lab/khmer,Winterflower/khmer,jas14/khmer,ged-lab/khmer,souravsingh/khmer,kdmurray91/khmer,jas14/khmer,souravsingh/khmer,kdmurray91/khmer,kdmurray91/khmer,ged-lab/khmer,Winterflower/khmer,Winterflower/khmer,F1000Research/khmer,jas14/khmer,F1000Research/khmer,F1000Research/khmer,souravsingh/khmer