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Changelog

Source: NEWS.md

Version 2026.8.6

Licensing

  • The copyright holder is now Folkehelseinstituttet. It read “Core Surveillance”, which names the package family rather than a legal entity.

  • DESCRIPTION Authors@R now declares that holder with role = "cph". It declared no copyright holder at all, and neither did any other package in the fleet. Nothing in R CMD check reports that.

  • The copyright year is now 2026. It read 2023.

  • CLAUDE.md now carries a Licensing section, so the year gets checked rather than silently ageing.

  • Documentation only. No function changes behaviour.

  • vignette("cstime"), which pkgdown promotes to “Get started”, gained an overview at the front. The overview states what the package is for and describes the <from>_to_<to>_<suffix> naming pattern that 32 of the 33 exports follow. It then works three examples of what surprises people:

    • An ISO year is not a calendar year.
    • An ISO year has 52 or 53 weeks.
    • A season week is not an ISO week.

    The overview closes with where cstime sits relative to cstidy.

  • The existing sections of vignette("cstime") are unchanged.

  • Removed a false sentence from vignette("cstime"). It claimed that cstime provides functions to generate rolling date ranges for weekly, bi-weekly and 4-week averages. No such function exists. None of the 33 exports returns a range, and R/, man/ and NAMESPACE hold zero matches for “rolling”, “bi-week”, “4-week” or “average”.

  • Rewrote the roxygen prose, the three vignettes, README.md and index.md to the house technical-prose standard (ASD-STE100, Simplified Technical English). Sentences over 25 words are now zero in R/, zero in the vignette body text, zero in README.md and zero in index.md. No claim changed apart from the removal described above.

Version 2026.8.4

  • Documentation only. No function changes behaviour.
  • README.md gained an installation section, a quick start and a which-function-do-I-want table.
  • Every exported function gained an @seealso that names the vignette covering it, or states plainly that no vignette runs it.
  • Added four @family groups for the date-to-character, date-to-number, yearweek-to-character and yearweek-to-number converters.
  • Corrected three documentation claims. dates_by_isoyearweek covers ISO years 1900 to 2099, not 1900 to 2100. date_to_isoquarter_n() and isoyearweek_to_isoquarter_n() return a numeric vector, not an integer vector. nor_workdays_by_isoyearweek stores its proportions rounded to two decimal places.
  • now_c() now documents that its result depends on the session time zone.
  • index.md and pkgdown are no longer shipped in the source tarball.

Version 2025.10.13

CRAN release: 2025-10-14

  • Seasons now start on week 35.

Version 2024.5.13

  • Adding season_to_last_date

Version 2023.12.28

  • Adding support for isoquarter and isoyearquarter

Version 2023.5.3

CRAN release: 2023-05-15

  • Inclusion of now_c that gives the current time in character format.

Version 2023.4.26

  • Uses binary searches to improve speed on date conversions.

Version 2023.4.25

  • Implements csutils::apply_fn_via_hash_table to speed up the conversion functions.