Did some overhauling for the fitting notebook.
Did some overhauling for the fitting notebook.

Acknowledged that iterSSID-based fits may just continue to break due to
degeneracies in these provided initialisations. Will now just continue with
next dataset/initialiser setup.

Also started saving everything both in .mat and .npz.

mackelab/pyRRHDLDS,mackelab/pyLDS_dev