Implement delong_auc_ci/paired/unpaired/by_group via Sun & Xu 2014 midrank; cite DeLong 1988; test vs 8-point toy AUC=0.875.
Implement delong_auc_ci/paired/unpaired/by_group via Sun & Xu 2014 midrank; cite DeLong 1988; test vs 8-point toy AUC=0.875.