trying to add default argument to python constructor
trying to add default argument to python constructor

this woll not work as Boost.Python believe the default argument for comm is a
string

anyway we needed to trigger Travis CI and this will do

dalg24/Cap,dalg24/Cap,dalg24/Cap,ORNL-CEES/Cap,Rombur/Cap,Rombur/Cap,Rombur/Cap,ORNL-CEES/Cap,ORNL-CEES/Cap