added possibility to use different time integration schemes for ion...

added possibility to use different time integration schemes for ion concentration for exponential integrator

assigned to @ml2851

By jonathan.froehlich on 2022-08-08T10:56:21 (imported from GitLab)

enabled an automatic merge when the pipeline for 37cfa2df succeeds

By laura.pfeiffer on 2022-08-08T11:14:10 (imported from GitLab)

mentioned in commit c6d2e472

By laura.pfeiffer on 2022-08-08T11:26:05 (imported from GitLab)

merged