The least squares extrapolation proceeds component-wise and produces
vector-valued fields.

Now time, current solution and the process DOF table are passed to the
extrapolation routine, enabling more versatile nodal output
possiblities.

[Mat/Fracture] support 3d in MC model

[web] Fixed index page.

Requires pandoc-citeproc tool.

Extend LIE mechanics and hydro-mechanics processes to 3D.

Those like sigma_xz.

New mesh properties for fracture relative displacement and shear stress in the additional coordinate for output.

Fixed umlaut encoding and one math issue.

Use Eigen's index type in EigenMatrix and EigenVector

[Jenkins] Fix Doxygen ignored warnings.