npksum explicity only uses raw bandwidths now (and will emit an error
if passed numeric scale factors, bandwidth objects are still ok)
fixed some vla-related warnings
numerous changes to ensure total consistency between computations
done with scale factors vs. raw bandwidths
propagating new changes to distributions
finished propagation fixes for standard deviation mismatches
Merge branch 'master' of https://github.com/JeffreyRacine/R-Package-np