adding in output selection support when noxaxis command is present, can end up with a 0-D array if one output and noxaxis is used, which is odd..

Only thing missing really is the arxiv link to the document.

wz -> w for gaussian parameters.

an error I would prefer to just print that and exit(1).

which might work better for thermal lens part.

in older revisions of scipy.

added proper formatting to the gauss parameters i.e.
{.15g}, probably need to do that for many other params as well.