FEAT: new HCIDataset.copy() function
FEAT: new HCIDataset.copy() function

This is used for replicating a HCIDataset e.g. when dealing with injections (→ ROC curve)

By default it creates a deep copy (= really copy everything), like numpy’s ndarray.copy() does.

carlgogo/vip_exoplanets,henry-ngo/VIP,vortex-exoplanet/VIP