If "alpha.mle" is called, a list including:
itersThe nubmer of iterations the EM algorithm required.
loglikThe maximimized log-likelihood of the folded model.
pThe estimated probability inside the simplex of the folded model.
muThe estimated mean vector of the folded model.
suThe estimated covariance matrix of the folded model.
If "a.mle" is called, the log-likelihood is returned only.