Query 'R' Versions, Including 'r-release' and 'r-oldrel'
c(person(given = "Gábor",
             family = "Csárdi",
             role = c("aut", "cre"),
             email = "csardi.gabor@gmail.com"),
      person(given = "Jeroen",
             family = "Ooms",
             role = "ctb",
             email = "jeroen.ooms@stat.ucla.edu"),
      person(given = "R Consortium",
             role = "fnd"))
Query the main 'R' 'SVN' repository to find the
    versions 'r-release' and 'r-oldrel' refer to, and also all previous
    'R' versions and their release dates.
Gábor Csárdi [aut, cre],
  Jeroen Ooms [ctb],
  R Consortium [fnd]