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.

[HT] Changed the name and the type of the material property member of HT, and

took the forward declaration of the type of that member.

 from the two classes of coupled term.

[Coupling] Changed the members of the coupled term,

 which only contains the solutions of the coupled equations.

[Coupling] Modified the process definitions in Process/HT for the assembly for both of the monolithic scheme and the staggered scheme.

pointer to StaggeredCouplingTerm

 for the staggered scheme.

coupled terms.