exportPattern("^[^\\.]")
import(geiger,ape,phangorn,utils,scatterplot3d)
importFrom("graphics", "abline", "hist", "legend", "points", "arrows", "plot","text")
importFrom("stats", "dist", "quantile", "sd", "var", "AIC", "BIC", "logLik", "na.omit", "pchisq", "shapiro.test","model.frame")