Changes in version 0.1.2                        

CRAN resubmission; no changes to the API or behaviour.

  - Replaced the placeholder getting-started vignette with a full
    walkthrough of the pipeline on pollen_demo, covering gaps vs.
    missing values, the classed gap error, ISO week/year boundaries,
    custom seasons, imputation flags and min_obs, moving-average
    defaults, and within-group lags.
  - README now notes that stats (part of base R) is imported alongside
    cli and rlang.

                 Changes in version 0.1.1 (2026-08-04)                  

Maintenance and packaging fixes; no user-facing API changes.

  - Fixed the installation instructions in the README (replaced the
    <user> placeholder with the repository owner).
  - Removed build and check artifacts (*.Rcheck/, source tarball,
    README.html) from version control and added them to .gitignore.
  - Cleaned up the Authors@R field and citation metadata (inst/CITATION,
    CITATION.cff), removing a name suffix that was embedded in the
    family name.
  - R CMD check now passes with no errors, warnings, or notes.

                        Changes in version 0.1.0                        

First release.

Exported functions

  - complete_daily_grid() inserts rows for absent calendar days, within
    group.
  - assign_iso_week() appends ISO 8601 week and year.
  - assign_season() appends a configurable season label (meteorological,
    astronomical, or custom pollen-season breaks).
  - impute_weekly_mean() fills missing daily values with the ISO-week
    mean and flags what it filled.
  - build_moving_average() appends trailing (or centred) windowed means.
  - apply_lag() appends time-indexed lags.

Data

  - pollen_demo: synthetic daily pollen counts from two sites over one
    spring season, containing both gaps and missing values.

Design decisions

Two decisions with cross-cutting consequences were made before
implementation and are recorded in inst/DESIGN-DECISIONS.md:

  - DD-01. ISO weeks are computed in base R via the nearest-Thursday
    rule, not via strftime()'s %V/%G, whose behaviour has varied by
    platform. Output is identical on every operating system.
  - DD-02. apply_lag() and build_moving_average() raise an error on a
    gapped daily grid rather than completing it silently. Call
    complete_daily_grid() first.

A note on defaults

Every default in this package changes what an exposure variable means —
moving-average alignment, window inclusivity, min_obs, the season
definition, the treatment of gaps. Changing a default is therefore a
breaking change to the estimand, even when it is not a breaking change
to the API, and will be documented here as such.