Changes in version 0.1.1 (2026-06-20)                  

  - Addressed CRAN review comments:
      - Software and package names ('shiny', 'lrstat', 'powerSurvEpi')
        are now written in single quotes in the Description.
      - Added 'testthat' unit tests for the internal (non-exported)
        calculation functions, so that breaking changes in R or in the
        upstream packages are detected automatically.
  - Moved 'lrstat' and 'powerSurvEpi' from Suggests to Imports, as they
    are now used directly by the package's internal calculation engine.

                        Changes in version 0.1.0                        

  - Initial release.
  - run_app() launches an interactive Shiny application for
    survival-endpoint sample size and power calculation.
  - Implements the Lu (2021) weighted log-rank method (via lrstat) and
    the Freedman (1982) method (via powerSurvEpi), with survival-curve
    and event-prediction visualisations and a method comparison.