scatter_series.rb: added line_width to scatter series
scatter_series.rb: added line_width to scatter series

Signed-off-by: Erik Veijola <c826ac381a7666e1e8037a6960b415611341bb0e@intel.com>

pedrogarrett/axlsx,randym/axlsx,romuloceccon/axlsx,raghavendra-prithvi/axlsx,Debiancc/axlsx,woto/axlsx,clarkcutler/axlsx,kappiah/axlsx,mromulus/axlsx,alexanderfrankel/axlsx,legitscript/axlsx,bradstewart/axlsx,VueOps/axlsx,sh-ft/axlsx