🚀 go-pugleaf

I just got my 2.11 today, and I already found a bug.  What's more discouraging,
it's one that I found, fixed, and posted to the net over 3 years ago.

The news standard says that message-ids in the references line should be blank
separated, but the software makes them comma-separated.

I asked Mark Horton about this at the time, and he said the bug is in the code,
not the documentation.  The fix is on line 732 of readr.c:

			(void) strcat(folbuf, ", ");

should be

			(void) strcat(folbuf, " ");