Supersaturated water

[ecoon]

In transport, sinks of water (evaporation, freezing) can result in increasing concentration without bound, but this can break geochemical engines. In the real world, such water becomes supersaturated and precipitates solids. Transport already has a pool of solid_residue that is meant to store this solid when water disappears completely. It should be easy to

1. Allow the user to provide a max concentration, by specie, default = inf,
2. In transport, if C reaches this value, precipitate out into solid residue sufficient C to reach C_max.

[hiter-joe]

Hi Ethan,

I've updated the code and thoroughly tested the maximum concentration for different components.
Everything seems to be working well from my end.
I was eager to create a pull request, but unfortunately, I encountered an issue.
It appears that I'm not a collaborator on the ATS GitHub repository.

I would greatly appreciate any suggestions or guidance you may have on how to proceed with creating that pull request.
Thanks,
Bing

[ecoon]

@hiter-joe You should be good now Bing!