There is an extra space between the last two items, so the output of coauthors() would generate the output John Smith, John Doe and Jane Doe. It was really noticeable when I tried adding a serial comma with coauthors( null, ', and ' ). The output was John Smith, John Doe , and Jane Doe (notice the extra space between John Doe and the comma).
John Smith, John Doe and Jane Doe
coauthors( null, ', and ' )
John Smith, John Doe , and Jane Doe
Remove extraneous space between last two items.
@johnciacia Did you look into what repercussions this change might have?
Tested and doesn't appear to have backwards compat concerns.
Props for #139