Changelog
Source:NEWS.md
    kfre 0.0.1
Initial CRAN submission.
Added
- Core risk API: 
risk_pred_core()(2- and 5-year KFRE). - R6 helper: 
RiskPredictorwithpredict_kfre()andkfre_person(). - Dataframe helper: 
add_kfre_risk_col()to appendkfre_<n>var_<y>yearcolumns. - Performance utilities: 
eval_kfre_metrics()andplot_kfre_metrics(). - Outcome & staging: 
class_esrd_outcome()andclass_ckd_stages(). - Misc: 
apply_precision(), unit tests incl. Seoul demo (skipped if local data missing).