When reference designators are grouped on a single line in the output file, they are separated by a hard-coded space character. Some PCB assembly services want different characters (primarily ",") to separate the reference designators. This pull request creates a configuration file option "ref_separator" that defaults to the original hard-coded space but can be changed to a comma or anything else needed by adding a line to the configuration file.
When reference designators are grouped on a single line in the output file, they are separated by a hard-coded space character. Some PCB assembly services want different characters (primarily ",") to separate the reference designators. This pull request creates a configuration file option "ref_separator" that defaults to the original hard-coded space but can be changed to a comma or anything else needed by adding a line to the configuration file.