Attempting to further unify scale for npglpreg by increasing scale of
categorical bandwidths from [0,1] to [0,10]. Looking at search
printout it appears that this is much improved.
Decided to use degree.max as default scaling for categorical
bandwidths. This is likely the most robust alternative and defaults to
10 (what I have been using) but becomes more elastic when large
degree.max is used. There is a tension - numeric bandwidths can and
will scale from 0 to Inf, degree from 0 to degree.max, and now
categorical bandwidths from 0 to degree.max.