- Feature #715: Implement Surfacic Bidomain model. - Bug #754: There was undefined behaviour when derivates of shape functions were requested for operators that act in a lesser dimension than the mesh. - Bug #745: Fix parallelism in FSI. - Bug #739: When compiled with gcc, there was an issue at the end of the code related of the destruction of singletons. To my knowledge nothing iwas wrong, but I worked around it by manually calling destruction of singletons in Model::Finalize(). #740 has been issued to check whether this manual deletion is still necessary when gcc verion will be upgraded. - Support #738: Adapt the code to El Capitan. - Bug #734: FEltSpace::GetLocalFEltSpace(const GeometricElt& geometric_elt) was inefficient. - Bug #732: In InitializeVectorSystemSolution Nprocessor_wise_dof is wrong. - Feature #731: Refactor slightly non linear source. - Design #729: Refactor slightly Snes class to handle more cleanly the different kind of solvers. - Support #725: Creation of a SNES object is now performed by a free function. - Support #724: SCons is now more user-friendly: a new target is automatically created for each program, and it's easier to compile only some of them. If no target provided, possible targets are given away.