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)

Collection of Common Astronomical Conversion Routines and
Functions

Contains a number of common astronomy conversion routines, particularly the HMS and degrees schemes, which can be fiddly to convert between on mass due to the textural nature of the former. It allows users to coordinate match datasets quickly. It also contains functions for various cosmological calculations.

Snowball Stemmers Based on the C 'libstemmer' UTF-8 Library

person("Milan", "Bouchet-Valat", email="nalimilan@club.fr",
                  role=c("aut", "cre"))

An R interface to the C 'libstemmer' library that implements
  Porter's word stemming algorithm for collapsing words to a common
  root to aid comparison of vocabulary. Currently supported languages are
  Arabic, Basque, Catalan, Danish, Dutch, English, Finnish, French, German, Greek,
  Hindi, Hungarian, Indonesian, Irish, Italian, Lithuanian, Nepali,
  Norwegian, Portuguese, Romanian, Russian, Spanish, Swedish, Tamil
  and Turkish.

Dr Martin Porter (2001) and Richard Boulton (2004, 2005) for
the 'libstemmer' C library, and Milan Bouchet-Valat (2013) for
the R package contents.

Utilities for Scheduling Functions to Execute Later with Event
Loops

c(
    person("Winston", "Chang", role = c("aut", "cre"), email = "winston@posit.co"),
    person("Joe", "Cheng", role = c("aut"), email = "joe@posit.co"),
    person(family = "Posit Software, PBC", role = "cph"),
    person("Marcus", "Geelnard", role = c("ctb", "cph"), comment = "TinyCThread library, https://tinycthread.github.io/"),
    person("Evan", "Nemerson", role = c("ctb", "cph"), comment = "TinyCThread library, https://tinycthread.github.io/")
    )

Executes arbitrary R or C functions some time after the current
    time, after the R execution stack has emptied. The functions are scheduled
    in an event loop.