stop maxit from blowing up in npindexbw every time convergence fails
Using chol2inv/chol rather than solve throughout, pushed a potential
fix for ridging/cv.aic from npglpreg
Removed lingering vestiges of manual robust scale, replaced with
EssDee in util.R for consistency throughout functions (those in the R
directory at least)
Housekeeping - replaced (4/3)^0.2 with 1.059224
npcdensbw prints optimization logs for debugging purposes
EssDee has been fortified against unruly data
Merge branch 'master' of https://github.com/JeffreyRacine/R-Package-np

Conflicts:
	R/np.singleindex.bw.R
added support for new bandwidth selection argument: scale.init.categorical.sample=FALSE, due to the fact that scaled guesses for the categorical bws can in certain cases restrict the search to a pathological region of the objective function
added scale.init.categorical.sample support to all  bw selection routines
Merge branch 'master' into npRmpi

Conflicts:
	DESCRIPTION