Added the two-fluid C-shock test, and positivity preserving IMEX integrator of Krapp+(2024). The latter does not yet pass the C-shock test, so it requires further work before being used in applications. I wanted to get the C-shock test merged to 'main' however.
Added the two-fluid C-shock test, and positivity preserving IMEX integrator of Krapp+(2024). The latter does not yet pass the C-shock test, so it requires further work before being used in applications. I wanted to get the C-shock test merged to 'main' however.