The unordered li-racine kernel is now normalized.
first step in the following:
consolidate and unify various argument to string functions relating to kernels
transparently select normalized li-racine kernel(s) where appropriate
further consolidation (unconditional densities)
further consolidation (regression)
further consolidation (conditional densities)
further consolidation (conditional distributions)
further integration
further consolidation (plregression)
done consolidation
Merge branch 'master' of https://github.com/JeffreyRacine/R-Package-np