httr, vctrs, testthat, knitr, rmarkdown, R.rsp, sf

Jeroen Ooms [aut, cre] (<https://orcid.org/0000-0002-4035-0289>),
  Duncan Temple Lang [ctb],
  Lloyd Hilaiel [cph] (author of bundled libyajl)

graphics, Matrix, methods, splines, stats, utils

c(person(c("Terry", "M"), "Therneau",
                    email="therneau.terry@mayo.edu",
	            role=c("aut", "cre")),
               person("Thomas", "Lumley", role=c("ctb", "trl"),
	       comment="original S->R port and R maintainer until 2009"),
	       person("Atkinson", "Elizabeth", role="ctb"),
	       person("Crowson", "Cynthia", role="ctb"))

Contains the core survival analysis routines, including
	     definition of Surv objects, 
	     Kaplan-Meier and Aalen-Johansen (multi-state) curves, Cox models,
	     and parametric accelerated failure time models.

Terry M Therneau [aut, cre],
  Thomas Lumley [ctb, trl] (original S->R port and R maintainer until
    2009),
  Atkinson Elizabeth [ctb],
  Crowson Cynthia [ctb]

Tools for package development, administration and documentation.

codetools, methods, xml2, curl, commonmark, knitr, xfun,
mathjaxr, V8

Dirk Eddelbuettel, Romain Francois, JJ Allaire, Kevin Ushey, Qiang Kou,
 Nathan Russell, Inaki Ucar, Douglas Bates and John Chambers

The 'Rcpp' package provides R functions as well as C++ classes which
 offer a seamless integration of R and C++. Many R data types and objects can be
 mapped back and forth to C++ equivalents which facilitates both writing of new
 code as well as easier integration of third-party libraries. Documentation
 about 'Rcpp' is provided by several vignettes included in this package, via the
 'Rcpp Gallery' site at <https://gallery.rcpp.org>, the paper by Eddelbuettel and
 Francois (2011, <doi:10.18637/jss.v040.i08>), the book by Eddelbuettel (2013,
 <doi:10.1007/978-1-4614-6868-4>) and the paper by Eddelbuettel and Balamuta (2018,
 <doi:10.1080/00031305.2017.1375990>); see 'citation("Rcpp")' for details.

tinytest, inline, rbenchmark, pkgKitten (>= 0.1.2)

c(
    person("Jim", "Hester", role = "aut",
           comment = c(ORCID = "0000-0002-2739-7082")),
    person("Jennifer", "Bryan", , "jenny@posit.co", role = c("aut", "cre"),
           comment = c(ORCID = "0000-0002-6983-2759")),
    person("Posit Software, PBC", role = c("cph", "fnd"))
  )