cli, crayon (>= 1.3.4), ellipsis, fansi, lifecycle, rlang (>=
0.3.0), utf8 (>= 1.1.0), vctrs (>= 0.2.0)

bit64, knitr, lubridate, testthat (>= 2.0.0), withr

Kirill Müller [aut, cre],
  Hadley Wickham [aut],
  RStudio [cph]

Tools for Generating and Handling of UUIDs

Simon Urbanek <Simon.Urbanek@r-project.org> (R package), Theodore Ts'o <tytso@thunk.org> (libuuid)

Tools for generating and handling of UUIDs (Universally Unique Identifiers).

Flexibly Reshape Data: A Reboot of the Reshape Package

Flexibly restructure and aggregate data using just two
    functions: melt and 'dcast' (or 'acast').

Simulate Package Installation and Attach

c(
    person("Hadley", "Wickham", role = "aut"),
    person("Jim", "Hester", , "james.hester@rstudio.com", role = c("aut", "cre")),
    person("Winston", "Chang", role = "aut"),
    person("RStudio", role = "cph"),
    person("R Core team", role = "ctb",
      comment = "Some namespace and vignette code extracted from base R")
    )

Simulates the process of installing a package
    and then attaching it. This is a key part of the 'devtools' package as it
    allows you to rapidly iterate while developing a package.

desc, methods, pkgbuild, rlang, rprojroot, rstudioapi, utils,
withr

person("Jim", "Hester", email = "james.f.hester@gmail.com", role = c("aut", "cre"))

An implementation of interpreted string literals, inspired by
  Python's Literal String Interpolation <https://www.python.org/dev/peps/pep-0498/> and Docstrings
  <https://www.python.org/dev/peps/pep-0257/> and Julia's Triple-Quoted String Literals
  <https://docs.julialang.org/en/v1.3/manual/strings/#Triple-Quoted-String-Literals-1>.

testthat, covr, magrittr, crayon, knitr, rmarkdown, DBI,
RSQLite, R.utils, forcats, microbenchmark, rprintf, stringr,
ggplot2, dplyr, withr, vctrs (>= 0.3.0)

Parsing and Evaluation Tools that Provide More Details than the
Default

c(
    person("Hadley", "Wickham", role = "aut"),
    person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),
    person("Michael", "Lawrence", role = "ctb"),
    person("Thomas", "Kluyver", role = "ctb"),
    person("Jeroen", "Ooms", role = "ctb"),
    person("Barret", "Schloerke", role = "ctb"),
    person("Adam", "Ryczkowski", role = "ctb"),
    person("Hiroaki", "Yutani", role = "ctb"),
    person("Michel", "Lang", role = "ctb"),
    person("Karolis", "Koncevičius", role = "ctb")
    )