Provides an easy-to-use tind class representing time indices
    of different types (years, quarters, months, ISO 8601 weeks, dates,
    time of day, date-time, and arbitrary integer/numeric indices).
    Includes an extensive collection of functions for calendrical computations
    (including business applications), index conversions, index parsing,
    and other operations. Auxiliary classes representing time differences and
    time intervals (with set operations and index matching functionality) are
    also provided. All routines have been optimised for speed in order
    to facilitate computations on large datasets. More details regarding
    calendars in general and calendrical algorithms can be found in
    "Calendar FAQ" by Claus Tøndering <https://www.tondering.dk/claus/calendar.html>.

A universal non-uniform random number generator
  for quite arbitrary distributions with piecewise twice
  differentiable densities.

Parsing '(R)Markdown' files with numerous regular expressions can
    be fraught with peril, but it does not have to be this way. Converting
    '(R)Markdown' files to 'XML' using the 'commonmark' package allows
    in-memory editing via of 'markdown' elements via 'XPath' through the
    extensible 'R6' class called 'yarn'. These modified 'XML' representations
    can be written to '(R)Markdown' documents via an 'xslt' stylesheet which
    implements an extended version of 'GitHub'-flavoured 'markdown' so that you
    can tinker to your hearts content.

Instead of nesting function calls, annotate and transform 
    functions using "#." comments.

A 'tufte'-alike style for 'rmarkdown'.
 A modern take on the 'Tufte' design for pdf and html vignettes,
 building on the 'tufte' package with additional contributions
 from the 'knitr' and 'ggtufte' package, and also acknowledging
 the key influence of 'envisioned css'.

Generate a palette of tints, shades or both from a single colour.

Palettes generated from Tintin covers. There is one palette per
  cover, with a total of 24 palettes of 5 colours each. Includes functions to
  interpolate colors in order to create more colors based on the provided
  palettes.The data is based on Cyr, et al. (2004) <doi:10.1503/cmaj.1041405>
  and Wikipedia <https://en.wikipedia.org/wiki/The_Adventures_of_Tintin>.