Apply lessons learned from SC to ZPHI.
Support running a list of algorithms.
Ignore data directory link.
Add function for calculating specific attenuation.
Add datatypes for differences between some types.
Be smarter about when to capitalize the source.
Tweak diff. atten. norm for Cband.
Add default norm and colormaps for the difference fields.
Don't add subpanel labels if we only make one panel.
Add module of data-specific functions.

Start moving some of the common helper code out of the notebooks and
into a module that makes them available everywhere. This should help
streamline the process of writing scripts.
Add script of plots for advisor.

This is the first customer of the experiments modules.