Run CRAN URL Checks from Older R Versions
c(
    person("R Core team", role = "aut",
           comment = "The code in urltools.R adapted from the tools package"),
    person("Jim", "Hester", role = "aut",
           comment = c(ORCID = "0000-0002-2739-7082")),
    person("Gábor", "Csárdi", , "csardi.gabor@gmail.com", role = c("aut", "cre")),
    person("RStudio", role = c("cph", "fnd"))
  )
Provide the URL checking tools available in R 4.1+ as a
    package for earlier versions of R. Also uses concurrent requests so
    can be much faster than the serial versions.
R Core team [aut] (The code in urltools.R adapted from the tools
    package),
  Jim Hester [aut] (<https://orcid.org/0000-0002-2739-7082>),
  Gábor Csárdi [aut, cre],
  RStudio [cph, fnd]