Initial CRAN submission.
risk_pred_core() (2- and 5-year KFRE).RiskPredictor with predict_kfre() and kfre_person().add_kfre_risk_col() to append kfre_<n>var_<y>year columns.eval_kfre_metrics() and plot_kfre_metrics().class_esrd_outcome() and class_ckd_stages().apply_precision(), unit tests incl. Seoul demo (skipped if local data missing).