v10 compatibility and features

[wtbarnes]

V10 is now out and there are a host of new features that need to be supported. See the announcement and associated paper in Solar News. From that posting, the updates are:

• Updated atomic data for most of the ions along the beryllium, carbon and magnesium isoelectronic sequences.
• New two-ion models for the He-like sequence, allowing recombination and autoionization to be modeled self-consistently.
• A new model of Fe VII that includes many lines in the EUV, and updated energy levels for the coronal ions Fe X-XII.
• New code for allowing the high-density suppression of dielectronic recombination to be modeled in the ionization equilibrium. See #233.
• New recombination rates into neutral helium, and rates from Si-like to P-like ions. These modify the default chianti.ioneq file.

This issue should probably be broken into smaller ones at some point, but leaving it as a monolith for now.

[jwreep]

Of these, how many are simply updating the data files? It's not clear (to me) which tasks require significant overhauls or new functionality in the code.

[wtbarnes]

That is a good question. From that list, the only one that seems to require a modification to the actual code is the second to last point about including the suppression of DR at high densities.

I'm not sure how exhaustive this list is though.