OldDrawGrid example: mesh slicing algorithm can now correctly resolve multiple slices on single cell. USE_AUTODIFF do not require USE_SOLVER and USE_MESH: If USE_MESH is not activated, class Automatizator and algebra for abstract variables is not compiled. If USE_SOLVER is not activated, class Residual is not compiled. Fixed reverse_iterator::operator- in ElementArray. class incident_matrix that computes closed loops out of set of edges or faces can now work on coordinates other then physical coordinates. Fixed Face::SplitFace() was not connecting newly created faces to cells. Cell::Volume() now uses algorithm working correctly on non-convex cells. Face::CheckNormalOrientation() will now use volume calculation algorithm for non-convex cells to correctly orient faces. Face::FixNormalOrientation() will now use Face::SwapCells() instead of Face::ReorderEdges() on internal faces. New version is thread-safe with respect to Face::CheckNormalOrientation(). Improved algorithm for loading eclipse meshes.