Adding rmarkdown to Suggests due to failed tests during pull request.
* creating vignettes ... ERROR --- re-building 'dataRetrieval.Rmd' using rmarkdown Warning in engine$weave(file, quiet = quiet, encoding = enc) : The vignette engine knitr::rmarkdown is not available because the rmarkdown package is not available. Did you forget to add it to Suggests in DESCRIPTION? Please see https://github.com/yihui/knitr/issues/1864 for more information. Loading required namespace: sf --- finished re-building 'dataRetrieval.Rmd'