[fluidmatrixinteractions] Rename wettingPhaseIdx() -> wettingPhase()

Closes #847

See merge request !1929

Unit test for material laws

Closes #813

See merge request !1874

[efftoabs] Add sneToSn for symmetry reasons

See merge request !1928

Fix wrong implementation of dkrn_dswe in Brooks-Corey and Van Genuchten

Closes #844

See merge request !1912

[brookscorey] add regularization for rel. permeability derivatives

See merge request !1927

[gitignore] Add Python's *.pyc and __pycache__

See merge request !1926

[examples] Add statement at the beginning of autogenerated files

See merge request !1925

Feature/tracer multiphase test zero saturation

Closes #704

See merge request !1610

Update 2ptracer reference solution after correcting derivative

[parallel][solver] Use passed ParallelTraits instead of local alias

Closes #845

See merge request !1923

Dennis Gläser authored 4 years ago and Timo Koch committed 4 years ago

[mpfa][fluxvarscachefiller] detect zero diff coeffs also for single phase for compatibility with tracer model

[efftoabs][2p] Remove underscore from public member function names

See merge request !1922

Cleanup/wetting-phase-index

Closes #834

See merge request !1918

[mimetic][2p] At default to switch that throws NotImplemented

See merge request !1920