[compositional] Free switchable privars from typetag

See merge request !821

[newton] Reimplement timestep control

See merge request !816

[disc][cc] Free element boundary types from TypeTag

See merge request !820

[2p][2p1c] Free vtk outputfields from TypeTag

See merge request !819

[navierstokes] Free indices from TypeTag

See merge request !818

[component] Split interface into solid, liquid, gas

Closes #452

See merge request !813

Deprecate old Component base class

There are now two solve function overloads, on without timeLoop that does one newton run,
and one with a timeloop that decreases the time step and tries again.

Fix components docu in modules.txt

See merge request !815

[test] fix construction of NewtonSolver for 2p incompressible test

See merge request !814

[sequential] give problem to spatialparams (like implicit)

See merge request !809

Need to pass the `TimeLoop`.

[material] Fix alias introduced for deprecation to have default templ arg

See merge request !812

Feature/improve math functions

See merge request !807

[material] Move all components to namespace Components

Closes #375

See merge request !805

Add constexpr (not for geometricMean which uses std::sqrt) and noexcept.
Static assert the requirements on the input arguments, they have to be numbers.

[discretization] Rename DiscretizationMethods to DiscretizationMethod with lower-case fields

Closes #444

See merge request !806

[assembly][newton] reimplement partial reassembly

Closes #379

See merge request !796

Bernd Flemisch authored 7 years ago and Timo Koch committed 7 years ago

Transfer the partial reassembly functionality to the current
structure.

The `NewtonSolver` is responsible for the partial reassembly.
It owns a `unique_ptr` to an object of a new class
`PartialReassembler` which is invoked in the constructor as well as
in the methods `solve`, `newtonUpdate` and `assembleLinearSystem`.
The `PartialReassembler` object is created only if the parameter
`Newton.EnablePartialReassembly` is set to true.

After each Newton iteration, the `PartialReassembler` colors the
geometrical degrees of freedom depending on the shift of the
primary variables from the last time that the derivatives have been
calculated. This shift is updated by the function
`updateDistanceFromLastLinearization_` of the `NewtonSolver` and
passed to the function `computeColors` of the `PartialReassembler`
for the actual coloring. For green-colored entities, the entries in
the Jacobian are kept, while for the other entities, they are
recalculated.

Use an enum class `EntityColor` for the coloring, enable read
access to the color of an entity via the `PartialReassembler`.

Pass a pointer to the `PartialReassembler` when calling the routine
`assembleJacobianAndResidual` of the `Assembler`. Use SFINAE and
`enable_if` so that only assemblers accepting the additional
argument are invoked. The correspnding local assemblers have to be
adapted such that no calculations are performed for green elements.
Implement the functionality for Box, TPFA and MPFA; adapt the
`FVAssembler` as well as the `Box`/`CCLocalAssembler`
correspondingly.

The `PartialReassembler` throws if constructed with a discretization
method equal to None or Staggered. All `BoxLocalAssembler`s apart
from the implicit numeric one throw if called with a non-nullptr
to a `PartialReassembler`.

Allow for a default `nullptr` parameter to the assembly functions
that take a `PartialReassembler`. This requires a new class
`DefaultPartialReassembler` to be passed as a default template
parameter for these functions. This makes it possible to use the
functions `assembleJacobianAndResidual` of the global and local
assemblers as before without the additional argument.

Allow to set the thresholds and the weight for the calculation of
the effective reassembly threshold as parameters. Try to explain
the corresponding formula in a comment.

Use the functionality in the two-phase incompressible tests.

[staggered] export the discretization method from the FVGridGeometry

See merge request !799

[headercheck] fix several headers to pass make headercheck

See merge request !800

Increase consistency with the other FVGridGeometries.