std::vector<std::size_t> _ids_of_active_elements.

MSS being the mesh subsets.

processes of HT in the local assembly.

Needed for the description of the balance data.

for flexibility in coupling.

 HTProcess::setCoupledSolutionsOfPreviousTimeStep() before use.

 VectorMatrixAssemble::assembleWithJacobian

Clang format run on near-the-header lines.

Happy New Year

 in creating of the instances of classes of coupled processes.

[HT] Modified the velocity calculation in order that it can be used for both the monolithic and staggered schemes.