Nest documentation a bit more

[dopplershift]

So if you go here: https://unidata.github.io/MetPy/api/plots.html#id1

You see all of StationPlot, Hodograph, and SkewT listed with all their methods; this also shows up in the left side table of contents. It's probably worth creating individual pages for those classes with all the methods and only having entries for the classes themselves (or some kind of link to the page for the class) in the table.