cast_cs_field: Build a character (comma) separated List within field
Description
Builds a character (comma) separated list within a field given a data frame
with primary field repeating values and secondary field with values to be
character separated in the same field (secondary)
# NOT RUN {scnames <- c("Abrothrix longipilis", "Abrothrix jelskii")
SynList <- list_itis_syn(scnames)
cast_cs_field(SynList,"Name","Syn")
# }# NOT RUN {# }