update CHANGES
update CHANGES

GENI-NSF/geni-ar,tcmitchell/geni-ar,tcmitchell/geni-ar,GENI-NSF/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar,charliemeyer/geni-ar,GENI-NSF/geni-ar,charliemeyer/geni-ar,GENI-NSF/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar,tcmitchell/geni-ar,charliemeyer/geni-ar,GENI-NSF/geni-ar