A consistent, simple and easy to use set of
    wrappers around the fantastic 'stringi' package. All function and
    argument names (and positions) are consistent, all functions deal with
    "NA"'s and zero length vectors in the same way, and the output from
    one function is easy to feed into the input of another.

covr, htmltools, htmlwidgets, knitr, rmarkdown, testthat

Hadley Wickham [aut, cre, cph],
  RStudio [cph, fnd]

Dirk Eddelbuettel <edd@debian.org> with contributions 
 by Antoine Lucas, Jarek Tuszynski, Henrik Bengtsson, Simon Urbanek,
 Mario Frasca, Bryan Lewis, Murray Stokely, Hannes Muehleisen,
 Duncan Murdoch, Jim Hester, Wush Wu, Qiang Kou, Thierry Onkelinx, 
 Michel Lang, Viliam Simko, Kurt Hornik, Radford Neal, Kendon Bell,
 Matthew de Queljoe, Ion Suruceanu, and Bill Denney.

Create Compact Hash Digests of R Objects

Implementation of a function 'digest()' for the creation 
 of hash digests of arbitrary R objects (using the 'md5', 'sha-1', 'sha-256', 
 'crc32', 'xxhash', 'murmurhash' and 'spookyhash' algorithms) permitting easy
 comparison of R language objects, as well as functions such as'hmac()' to
 create hash-based message authentication code. Please note that this package
 is not meant to be deployed for cryptographic purposes for which more
 comprehensive (and widely tested) libraries such as 'OpenSSL' should be
 used.

Convert R Markdown documents into a variety of formats.

tools, utils, knitr (>= 1.22), yaml (>= 2.1.19), htmltools (>=
0.3.5), evaluate (>= 0.13), jsonlite, mime, tinytex (>= 0.11),
xfun, methods, stringr (>= 1.2.0)

shiny (>= 0.11), tufte, testthat, digest, dygraphs, tibble,
fs, rsconnect

JJ Allaire [aut],
  Yihui Xie [aut, cre] (<https://orcid.org/0000-0003-0645-5666>),
  Jonathan McPherson [aut],
  Javier Luraschi [aut],
  Kevin Ushey [aut],
  Aron Atkins [aut],
  Hadley Wickham [aut],
  Joe Cheng [aut],
  Winston Chang [aut],
  Richard Iannone [aut] (<https://orcid.org/0000-0003-3925-190X>),
  Andrew Dunning [ctb] (<https://orcid.org/0000-0003-0464-5036>),
  Atsushi Yasumoto [ctb, cph] (<https://orcid.org/0000-0002-8335-495X>,
    Number sections Lua filter),
  Barret Schloerke [ctb],
  Christophe Dervieux [ctb],
  Frederik Aust [ctb] (<https://orcid.org/0000-0003-4900-788X>),
  Jeff Allen [ctb],
  JooYoung Seo [ctb] (<https://orcid.org/0000-0002-4064-6012>),
  Malcolm Barrett [ctb],
  Rob Hyndman [ctb],
  Romain Lesur [ctb],
  Roy Storey [ctb],
  Ruben Arslan [ctb],
  Sergio Oller [ctb],
  RStudio, PBC [cph],
  jQuery Foundation [cph] (jQuery library),
  jQuery contributors [ctb, cph] (jQuery library; authors listed in
    inst/rmd/h/jquery-AUTHORS.txt),
  jQuery UI contributors [ctb, cph] (jQuery UI library; authors listed in
    inst/rmd/h/jqueryui-AUTHORS.txt),
  Mark Otto [ctb] (Bootstrap library),
  Jacob Thornton [ctb] (Bootstrap library),
  Bootstrap contributors [ctb] (Bootstrap library),
  Twitter, Inc [cph] (Bootstrap library),
  Alexander Farkas [ctb, cph] (html5shiv library),
  Scott Jehl [ctb, cph] (Respond.js library),
  Ivan Sagalaev [ctb, cph] (highlight.js library),
  Greg Franko [ctb, cph] (tocify library),
  John MacFarlane [ctb, cph] (Pandoc templates),
  Google, Inc. [ctb, cph] (ioslides library),
  Dave Raggett [ctb] (slidy library),
  W3C [cph] (slidy library),
  Dave Gandy [ctb, cph] (Font-Awesome),
  Ben Sperry [ctb] (Ionicons),
  Drifty [cph] (Ionicons),
  Aidan Lister [ctb, cph] (jQuery StickyTabs),
  Benct Philip Jonsson [ctb, cph] (pagebreak Lua filter),
  Albert Krewinkel [ctb, cph] (pagebreak Lua filter)