XsectionDisplay Updates

[AdamTheisen]

The XSectionDisplay codes don't quite follow the same format as some of the other plotting functions. The main issue is the dsname is the first variable. We should update to follow similar formats as the other plotting code.

    def plot_xsection_map(
        self, dsname, varname, subplot_index=(0,), coastlines=True, background=False, **kwargs
    ):  

[zssherman]

Makes sense to me!

[zssherman]

@AdamTheisen I noticed we are calling fields differently as well. We either use: 'data_field', 'varname', and 'field'. Which would we want? We should have it the same across.

[AdamTheisen]

Can we open this to a poll? I would say field is the easiest. I'm already working on some updates to xsectiondisplay so I can handle getting this in.

[zssherman]

Yeah I think field would be fine. We could open a poll as well.

[AdamTheisen]

We resolved this with merging in of #862