component_pardiff_s Submodule

Implementation of paralllel diffusion terms $$\partial_t n \rightarrow \partial_t n + \nabla\cdot\left(D_n \mathbf{b}\nabla_parallel n\right)$$ $$\partial_t \Gamma_\parallel \rightarrow \partial_t \Gamma_\parallel + \nabla\cdot\left(D_{\Gamma_{\parallel}}\mathbf{b}\nabla_parallel \Gamma_\parallel\right)$$