Edge case when variance is zero, log likelihood returns -Inf
Added loglikelihMoore; tests broken
Corrected DataCentroids, test Kmeansp in progress.
Removed extraneous tests for len([]) == 0
Debug version.  Bob's Your Uncle smoothing.
Instituted normalized smoothing for variance.
Cleaned up comments.
Consolidated manip.go and km.go.
uncomment and fix broken test by removing err return from DataCentroids
fix 2pi error, and add test to guarantee fix
BIC corrected to multiply log(R).
Corrected CalcBIC test.
Merge pull request #16 from danielhfrank/cc_tests

Reviewed
Additive constant in Loglikelihood is Nextafter(0, 1)
Merge branch 'master' of https://github.com/bobhancock/goxmeans
Merged with models.
Added bisectcc CentroidChooser to Models()
Merge branch 'models'
kmeansp: removed passing of CentPointDist.
Models: bisection concurrent