Merge branch 'cherry-pick-1d837397' into 'releases/2.8'

See merge request !393

Merge branch 'issue/install-missing-headers' into 'master'

See merge request !392

(cherry picked from commit 6a20d8a8)

5549cb30 Merge branch 'issue/install-missing-headers' into 'master'

Cherry-pick Add missing include / use std::invoke_result

See merge request !373

Clang master (futur 15) warns about it

Caused compilation error in DuMuX

Merge branch 'bugfix/fix-piola-transform' into 'master'

See merge request !339

Carsten Gräser authored Nov 03, 2021 and Oliver Sander committed Nov 04, 2021

[bugfix] Fix jacobian part of Piola transformations

See merge request !338

(cherry picked from commit 7bfbdd0c)

1c5ab34f [test] Extend globalvaluedlfetest
96858a98 [bugfix] Fix jacobian part of Piola transformations

Use 2.8.0 in dune.module

See merge request !323

CHANGELOG is for 2.8

See merge request !322

Merge branch 'feature/update-changelog' into 'master'

See merge request !320

Update changelog

See merge request !319

(cherry picked from commit 56851458)

fc4b00c4 Update changelog

Merge branch 'issue/deprecation-warning-in-concepts' into 'master'

See merge request !318

Ignore deprecation warnings inside a (deprecated) concept check

Closes #64

See merge request !312

(cherry picked from commit 6968d167)

b19c2fa2 Ignore deprecation warnings inside a (deprecated) concept check

Merge branch 'bugfix/subspace-dgbfunction-caching' into 'master'

See merge request !311

Fix caching in DiscreteGlobalBasisFunction

See merge request !310

(cherry picked from commit e69a3f65)

2ab54c7f [test] Check DiscreteGlobalBasisFunction with subspace basis
203f92a4 [bugfix] Fix caching in DiscreteGlobalBasisFunction

Update list of authors

See merge request !307

Put method 'periodic' into Dune::Functions::BasisFactory::Experimental

See merge request !306

... rather than Dune::Functions::Experimental::BasisFactory.
I find the previous nesting order much less intuitive.  Committing it
in the first place was an oversight on my part.

Fix interpolation for vector-valued finite elements

See merge request !304

To achive this the Range of the finite elements is now explicitly passed to the consistency check.

Instead of looping over the components of possibly vector valued coefficients
the interpolation is done directly in the FiniteElementRange.

For backward compatibility the old implementation is kept for scalar valued
finite elements. Especially old dune-fufem style power-bases with scalar finite
elements and vector-valued coefficients are still supported.

The 'indices' method was calling the wrong 'size' method: the one of
the basis rather the one of the node.  Consequently, it overran
the index buffer, leading to segmentation faults.

The segfaults showed up for `periodicbasistest`, in

  !263

Introduce PeriodicBasis

See merge request !263

fix some issues when using python bindings with clang - some minor errors and a double registry issue

See merge request !302

PeriodicBasis is a meta basis---a basis that is parametrized
with another basis.  In a PeriodicBasis, global degrees of freedom
of the host basis can be grouped into equivalence classes,
which are then treated as single global degrees of freedom by the
PeriodicBasis.  This allows, in particular, to implement periodic
boundary conditions for discretizations without intersection
integrals.

As there was some controversy about whether such a basis is really
needed the implementation is in the namespace
Dune::Functions::Experimental for now.  That will the code some
more exposure.

Thanks go to Carsten Gräser, who wrote a lot of code in this commit.

[bugfix] Transform only the indices of the current element

See merge request !303

The 'indices' method was calling the wrong 'size' method: the one of
the basis rather the one of the node.  Consequently, it overran
the index buffer, leading to segmentation faults.

The segfaults showed up for `periodicbasistest`, in

  !263

Use Ubuntu docker for Python tests

See merge request staging/dune-functions!301

fix some issues when using python bindings with clang - some minor errors and an issue with sharing static variables between modules causing pybind11's 'double registry' error

The Debian 11 docker showed some non-deterministic behavior.
See #63
for a detailed discussion.

Fix update() method of several global basis implementations

See merge request !298

Removed the const qualifier from the gridView_ member.

Added a test for the update() method in checkBasis().

Add test for the Poisson problem

See merge request !295

This tests almost the whole functionality of the currently available Python bindings