Use name `i_e` for Stim current density
Use name `i_e` for Stim current density

eth-cscs/nestmc-proto,halfflat/arbor,eth-cscs/nestmc-proto,halfflat/nestmc-proto,halfflat/arbor,halfflat/arbor,halfflat/arbor,halfflat/arbor,halfflat/nestmc-proto,eth-cscs/nestmc-proto,halfflat/nestmc-proto