average_gain            Get estimate of gain given a spend level.
difference_gain         Get estimate of difference in gain given a
                        spend level with paired standard errors.
get_aipw_scores         Construct evaluation scores via augmented
                        inverse-propensity weighting.
get_ipw_scores          Construct evaluation scores via
                        inverse-propensity weighting.
integrated_difference   Get estimate of the area between two Qini
                        curves with paired standard errors.
maq                     Fit a Multi-armed Qini curve.
plot.maq                Plot the estimated Qini curve.
predict.maq             Predict treatment allocation.
print.maq               Print a maq object.
summary.maq             Qini curve summary.
