WIP: Feature/simplify effectivelaws - Do not merge!
Fixes #711 (closed) Fixes #710 (closed) Fixes #733 (closed)
- Depends on a fix in MPFA to handle zero coefficients.
This MR is outdated and superseded by !1684 (merged)
Fixes #711 (closed) Fixes #710 (closed) Fixes #733 (closed)
This MR is outdated and superseded by !1684 (merged)