Generator: put back some empty lines.
Generator: put back some empty lines.

If we are to remove empty lines, which to me makes the code easier to read, then we should do it throughout the file, not only at some "random" places.

nickerso/libcellml,hsorby/libcellml,MichaelClerx/libcellml,MichaelClerx/libcellml,cellml/libcellml,cellml/libcellml,cellml/libcellml,hsorby/libcellml,nickerso/libcellml,hsorby/libcellml,hsorby/libcellml,MichaelClerx/libcellml,cellml/libcellml,nickerso/libcellml,nickerso/libcellml