R Package Installation from Remote Repositories, Including
'GitHub'

c(
    person("Jim", "Hester", , "jim.hester@rstudio.com", role = c("aut", "cre")),
    person("Gábor", "Csárdi", , "csardi.gabor@gmail.com", role = c("aut")),
    person("Hadley", "Wickham", role = c("aut")),
    person("Winston", "Chang", role = "aut"),
    person("RStudio", role = "cph"),
    person("Martin", "Morgan", role = "aut"),
    person("Dan", "Tenenbaum", role = "aut"),
    person("Mango Solutions", role = "cph")
    )

Download and install R packages stored in 'GitHub', 'GitLab', 
    'Bitbucket', 'Bioconductor', or plain 'subversion' or 'git' repositories. 
    This package provides the 'install_*' functions in 'devtools'. Indeed most 
    of the code was copied over from 'devtools'.

brew, callr, codetools, curl, covr, git2r (>= 0.23.0), knitr,
mockery, pkgbuild (>= 1.0.1), pingr, rmarkdown, rprojroot,
testthat, withr

Subversion for install_svn, git for install_git

Jim Hester [aut, cre],
  Gábor Csárdi [aut],
  Hadley Wickham [aut],
  Winston Chang [aut],
  RStudio [cph],
  Martin Morgan [aut],
  Dan Tenenbaum [aut],
  Mango Solutions [cph]

This package provides an easy and simple way to read, write and display bitmap images stored in the PNG format. It can read and write both files and in-memory raw vectors.

c(person(given = "Hadley",
             family = "Wickham",
             role = "aut",
             email = "hadley@rstudio.com"),
      person(given = "Lionel",
             family = "Henry",
             role = c("aut", "cre"),
             email = "lionel@rstudio.com"),
      person(given = "Davis",
             family = "Vaughan",
             role = "aut",
             email = "davis@rstudio.com"),
      person(given = "RStudio",
             role = "cph"))

Defines new notions of prototype and size that are
    used to provide tools for consistent and well-founded type-coercion
    and size-recycling, and are in turn connected to ideas of type- and
    size-stability useful for analysing function interfaces.