Start the review of the person conversion

DESCRIPTION

@@ -17,7 +17,7 @@ License: GPL (>= 3)
 URL: https://docs.ropensci.org/cffr/, https://github.com/ropensci/cffr
 BugReports: https://github.com/ropensci/cffr/issues
 Depends: 
- R (>= 3.6.0)
+ R (>= 4.0.0)
 Imports: 
  cli (>= 2.0.0),
  desc (>= 1.3.0),

NAMESPACE

@@ -10,6 +10,7 @@ S3method(toBibtex,cff)
 export(as.cff)
 export(cff)
 export(cff_create)
+export(cff_create_person)
 export(cff_extract_to_bibtex)
 export(cff_from_bibtex)
 export(cff_gha_update)

NEWS.md

@@ -40,7 +40,11 @@ modified:
  - `head.cff()`, `tail.cff()`.
  - `toBibtex.cff()`.
 
-## Changes on BibTeX crosswalk
+## Other changes
+
+- Minimum **R** version required now is **4.0.0**.
+
+### BibTeX crosswalk
 
 - **\@inbook** and **\@book** gains a new value on [CFF]{.underline} when
  **series** is provided: [collection-type: book-series.]{.underline}

R/cff-methods.R

@@ -96,6 +96,10 @@ tail.cff <- function(x, n = 6L, ...) {
 #'
 #' @param object `cff` object.
 #' @param ... Arguments passed to [utils::toBibtex()].
+#'
+#' @return
+#'
+#' `toBibtex.cff()` returns a `Bibtex` object.
 toBibtex.cff <- function(object, ...,
  what = c("preferred", "references", "all")) {
  # If a single reference...