classify_intervals() is
introduced to return a vector of class intervals of same length as input
(@JosiahParry)classIntervals() has a new style "maximum"
which returns maximum breaks classification based on the pysal library
mapclassify
(@JosiahParry)findCols() now takes new argument factor
which, when TRUE returns class membership as a factor with
intervals as labels (@JosiahParry)clarify dataPrecision= argument in help
page
Add "headtails" vignette (@dieghernan)
Add "headtails" style (@dieghernan)