set citestyle to comma in sage_article() per guideline (#451)

Co-authored-by: Christophe Dervieux <christophe.dervieux@gmail.com>

Author: maltehueckstaedt

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: rticles
 Type: Package
 Title: Article Formats for R Markdown
-Version: 0.21.1
+Version: 0.21.2
 Authors@R: c(
   person("JJ", "Allaire", role = "aut", email = "jj@rstudio.com"),
   person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),

NEWS.md

@@ -1,6 +1,8 @@
 # rticles 0.22
 
 - Update Copernicus Publications template to version 6.4 from 2021-08-16 (thanks, @RLumSK, #446).
+
+- `sage_article()` now correctly set cite style in template to use comma to match the Sage Havard style per Journal's guideline (thanks, @MalteHueckstaedt, #447).
 
 # rticles 0.21
 

inst/rmarkdown/templates/sage/resources/template.tex

@@ -49,6 +49,8 @@
 
 \begin{document}
 
+\setcitestyle{aysep={,}}
+
 \title{$title$}
 
 \runninghead{$runninghead$}