Bioinformatics template: extra comma after last author's name

[stephenturner]

rticles version 0.20: There's an extra comma after the last author's name in the Bioinformatics template. Looks like the author for loop is the culprit:

https://github.com/rstudio/rticles/blob/cd4d93a4ab1ebd8c9e3091a08fba2a165e5db18a/inst/rmarkdown/templates/bioinformatics/resources/template.tex#L61-L65

Specifically, here:

https://github.com/rstudio/rticles/blob/cd4d93a4ab1ebd8c9e3091a08fba2a165e5db18a/inst/rmarkdown/templates/bioinformatics/resources/template.tex#L63

I'm not sure how to modify to make an exception for the last author. I wasn't able to figure this out easily looking at other templates. Thank you!

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[stephenturner]

Looks like putting a $sep$ before that comma in the template might fix it.

[cderv]

Oh thank you !

I had already found the fix in #413 but it was not merged yet. Thank for looking into this though !

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