add overwrite check to Images.saveAsBinarySeries
add overwrite check to Images.saveAsBinarySeries

this now calls raiseErrorIfPathExists if overwrite is false, consistent
with the other saveAs implementations. Looks like this method was just
overlooked when the other checks were put in place.

thunder-project/thunder,mikarubi/thunder,mikarubi/thunder,zhwa/thunder,broxtronix/thunder,j-friedrich/thunder,kunallillaney/thunder,oliverhuangchao/thunder,oliverhuangchao/thunder,jwittenbach/thunder,pearsonlab/thunder,poolio/thunder,zhwa/thunder,kcompher/thunder,poolio/thunder,pearsonlab/thunder,j-friedrich/thunder,kunallillaney/thunder,broxtronix/thunder,kcompher/thunder