Changes in version 0.1.0 (2026-08-08)                  

  - Initial CRAN submission.
  - Added cochran_n() — base (unadjusted) Cochran sample size
    calculation.
  - Added cochran_n_adj() — finite population correction.
  - Added cochran_sample_size() — convenience wrapper with a print
    method, supporting user-adjustable confidence level, margin of
    error, and expected proportion.
  - Added introductory vignette and full test suite.