stats, methods, Matrix, numDeriv, Rcpp (>= 0.12.2)
nloptr, Matrix, stats, Rcpp, RcppParallel, doParallel,
foreach, parallel, methods, numDeriv
nloptr, Matrix, stats, Rcpp, RcppParallel, doParallel,
foreach, parallel, doSNOW, methods, numDeriv, EnvStats