Output symetrical distance matrix

A waste of space, I know, but lower triangle matrices are hell to import into some programs. I’m thinking about the Unifrac distance matrix specifically. Humor an old man?

Thanks for the suggestion. This will be part of 1.15.0. In 1.15.0, instead of setting the distance parameter to true or false, you can set it to lt, square or column. To make mothur backwards compatible, if distance=t the lower triangle matrix will be outputted.