Support for iterators, which allow a programmer to traverse
        through all the elements of a vector, list, or other collection
        of data.

Rich Calaway [cre],
  Revolution Analytics [aut, cph],
  Steve Weston [aut]

Tools for package development, administration and documentation.

Differential Evolution Optimization in Pure R

c(person("Eduardo L. T.", "Conceicao", role = c("aut", "cre"),
                    email = "mail@eduardoconceicao.org"),
             person("Martin", "Maechler", role = "ctb",
                    email = "maechler@stat.math.ethz.ch")
             )

Eduardo L. T. Conceicao <mail@eduardoconceicao.org>

Differential Evolution (DE) stochastic algorithms for global
  optimization of problems with and without constraints.
  The aim is to curate a collection of its state-of-the-art variants that
  (1) do not sacrifice simplicity of design,
  (2) are essentially tuning-free, and
  (3) can be efficiently implemented directly in the R language.
  Currently, it only provides an implementation of the 'jDE' algorithm by
  Brest et al. (2006) <doi:10.1109/TEVC.2006.872133>.

Eduardo L. T. Conceicao [aut, cre],
  Martin Maechler [ctb]

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"))

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)

A Toolbox for Manipulating and Assessing Colors and Palettes

c(person(given = "Ross", family = "Ihaka", role = "aut", email = "ihaka@stat.auckland.ac.nz"),
             person(given = "Paul", family = "Murrell", role = "aut", email = "paul@stat.auckland.ac.nz",
                    comment = c(ORCID = "0000-0002-3224-8858")),
             person(given = "Kurt", family = "Hornik", role = "aut", email = "Kurt.Hornik@R-project.org",
		    comment = c(ORCID = "0000-0003-4198-9911")),
             person(given = c("Jason", "C."), family = "Fisher", role = "aut", email = "jfisher@usgs.gov",
                    comment = c(ORCID = "0000-0001-9032-8912")),
             person(given = "Reto", family = "Stauffer", role = "aut", email = "Reto.Stauffer@uibk.ac.at",
                    comment = c(ORCID = "0000-0002-3798-5507")),
             person(given = c("Claus", "O."), family = "Wilke", role = "aut", email = "wilke@austin.utexas.edu",
                    comment = c(ORCID = "0000-0002-7470-9261")),
             person(given = c("Claire", "D."), family = "McWhite", role = "aut", email = "claire.d.mcwhite@gmail.com",
                    comment = c(ORCID = "0000-0001-7346-3047")),
             person(given = "Achim", family = "Zeileis", role = c("aut", "cre"), email = "Achim.Zeileis@R-project.org",
                    comment = c(ORCID = "0000-0003-0918-3766")))