Use main component index instead of phase index in the box version of Fick's law.

See merge request !1710

Obviously has been forgotten in c784ce62.

add unit test of binary coefficients

Closes #744

See merge request !1705

Bernd Flemisch authored Aug 29, 2019 and Kilian Weishaupt committed Sep 03, 2019

Test for the minimal interface of gasDiffCoeff and liquidDiffCoeff.
Allow throwing a NotImplemented.

remove unused reference solutions

Closes #742

See merge request !1702

deprecate intrange

Closes #744

See merge request !1704

add deprecated classes to CHANGELOG.md

Closes #744

See merge request !1706

[staggered][geometryhelper] Improve calculation of lateral distances

See merge request !1708

* consider sum of distances within inside and outside element

Feature/richards analytical jacobian

See merge request !1697

Feature/pass fluxcache to neumann

Closes #660

See merge request !1626

Bugfix/assembly numdiff explicit

See merge request !1707

This was previously not possible because of the bug in the
explicit/numdiff assembler. The large epsilon masked the error
in the storage derivative. Now it also works with small epsilon.

It is possible to use Dune::IntegralRange instead.

[facet][box] do not use support points for coupling fluxes

See merge request !1688

This reverts changes introduced in
aa5951f5 and the following commits.
It turned out that doing the flux computation on the basis of a support
point inside the cell and then a tpfa flux towards the facet elements
performed very bad for anisotropic tensors.

Use entity.type() instead of creating a temporary geometry

See merge request !1686

Constructing a geometry may be expensive depending on the grid
implementation.

[readme] Fix coverage link

See merge request !1685