- Bug #469: Fix several mpi bugs, most of which that occurred in the degenerate case in which one of the processor doesn't get any ghosted dof. - Feature #468: Hyperelasticity: produce 4 mains to represent all the combinations hyperelastic law/time schemes. - Feature #466-#467: Clean-up forces involved in Elastic and Hyperelastic models: it is no longer a hack to decide whether the force is surfacic or volumic, and one of each can be used at the same time. Also clean-up Lua files so that comments are really on par with latest code. - Feature #463: Modify the library so that Point geometric and finite elements can be used. - Feature #464: avoid some repeated allocations of Seldon matrices and vectors in ShapeFunctionAtQuadraturePoint.