New Year and New Autoplot

[Jeremy]

I've made a production release of Autoplot, v2023a_1.  New features include improvements to the handling of nominal data in HDF and NetCDF files, and improvements to the new "Kernel" rebinner for drawing spectrograms.  Quite a few obscure bugs were fixed, especially those which affected automated testing itself, where bugs would sometimes show in testing that wouldn't show when running interactively.

This is the "Start Autoplot" link on autoplot.org, or http://autoplot.org/jnlp/v2023a_1/.  The Mac release is still not available, but I intend to get that working again over the next few months.

Jeremy