hexbin (>= 1.27.0), ggplot2 (>= 1.0.1), testthat, covr

Simon Garnier [aut, cre],
  Noam Ross [ctb, cph],
  Bob Rudis [ctb, cph],
  Marco Sciaini [ctb, cph],
  Cédric Scherer [ctb, cph]

c(person(given = "Kirill",
             family = "M\u00fcller",
             role = c("aut", "cre"),
             email = "krlmlr+r@mailbox.org"),
      person(given = "Hadley",
             family = "Wickham",
             role = "aut",
             email = "hadley@rstudio.com"),
      person(given = "Romain",
             family = "Francois",
             role = "ctb",
             email = "romain@r-enthusiasts.com"),
      person(given = "Jennifer",
             family = "Bryan",
             role = "ctb",
             email = "jenny@rstudio.com"),
      person(given = "RStudio",
             role = "cph"))

Provides a 'tbl_df' class (the 'tibble') that
    provides stricter checking and better formatting than the traditional
    data frame.

cli, crayon (>= 1.3.4), ellipsis (>= 0.2.0), fansi (>= 0.4.0),
lifecycle (>= 0.2.0), magrittr, methods, pillar (>= 1.4.3),
pkgconfig, rlang (>= 0.4.3), utils, vctrs (>= 0.2.4)

bench, bit64, blob, covr, dplyr, evaluate, formattable, hms,
htmltools, import, knitr, lubridate, mockr, nycflights13,
purrr, rmarkdown, testthat (>= 2.1.0), tidyr, withr

Kirill Müller [aut, cre],
  Hadley Wickham [aut],
  Romain Francois [ctb],
  Jennifer Bryan [ctb],
  RStudio [cph]

c(
    person("Hadley", "Wickham", , "hadley@rstudio.com", role = "aut"),
    person("Jim", "Hester", , "jim.hester@rstudio.com", role = c("aut", "cre")),
    person("Kirill", "Müller", , "krlmlr+r@mailbox.org", role = "aut"),
    person("Daniel", "Cook", , "danielecook@gmail.com", role = "aut"))

Cache the results of a function so that when you call it
    again with the same arguments it returns the pre-computed value.

Hadley Wickham [aut],
  Jim Hester [aut, cre],
  Kirill Müller [aut],
  Daniel Cook [aut]

The ellipsis is a powerful tool for extending functions. Unfortunately 
    this power comes at a cost: misspelled arguments will be silently ignored. 
    The ellipsis package provides a collection of functions to catch problems
    and alert the user.

c(
      person("Hadley", "Wickham", , "hadley@rstudio.com", role = c("aut", "cre")),
      person("RStudio", role = "cph")
    )