Changelog • cstime

Version 2026.8.22

utils::globalVariables() declared %>% and := as well as .. Both are imported, so neither entry ever suppressed anything. Only . is declared now.

Version 2026.8.21

The package drops magrittr. Every %>% is now the base pipe |>, and magrittr is gone from DESCRIPTION.
The rewrite is a relocation, not an edit. Each %>% call was transformed the way R’s parser transforms |>, and the resulting tree was required to match the tree parsed from the rewritten file. A file whose trees disagreed was left untouched and converted by hand instead.
utils::globalVariables() no longer declares %>% or :=. Both are imported, so neither entry ever suppressed anything. Only . is declared now.

Version 2026.8.20

R/.DS_Store is removed. A macOS Finder artefact was committed inside R/, so it shipped in the tarball. .gitignore now covers it.
The version is bumped because the tarball changed. 2026.8.6 was already published from an earlier tree, and one version number must not name two.

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.