Add a function to report which files have not changed
Add a function to report which files have not changed

nh2/shake,ndmitchell/shake,nh2/shake,nh2/shake,ndmitchell/shake,ndmitchell/shake,ndmitchell/shake,ndmitchell/shake,nh2/shake,ndmitchell/shake,nh2/shake