💥 Add perfect_qini_curve func, refactor code; remove auuc and auqc funcs

Author: maks-sh

sklift/metrics/__init__.py

@@ -1,11 +1,13 @@
 from .metrics import (
-    uplift_curve, auuc, qini_curve, auqc, uplift_at_k, response_rate_by_percentile,
-    uplift_by_percentile, weighted_average_uplift, treatment_balance_curve,
-    uplift_auc_score, qini_auc_score
+    uplift_curve, perfect_uplift_curve, uplift_auc_score,
+    qini_curve, perfect_qini_curve, qini_auc_score,
+    uplift_at_k, response_rate_by_percentile,
+    weighted_average_uplift, uplift_by_percentile, treatment_balance_curve
 )
 
 __all__ = [
-    uplift_curve, auuc, qini_curve, auqc, uplift_at_k, response_rate_by_percentile,
-    uplift_by_percentile, weighted_average_uplift, treatment_balance_curve,
-    uplift_auc_score, qini_auc_score
+    uplift_curve, perfect_uplift_curve, uplift_auc_score,
+    qini_curve, perfect_qini_curve, qini_auc_score,
+    uplift_at_k, response_rate_by_percentile,
+    weighted_average_uplift, uplift_by_percentile, treatment_balance_curve
 ]