Add default move constructor and assignment operator if neither BOOST_NO_CXX11_RVALUE_REFERENCES nor BOOST_NO_CXX11_DEFAULTED_FUNCTIONS are defined.
Copying of voronoi_diagram is disabled because elements hold pointers which would be invalid after copying. But this would not be the case after move (allocators used by vectors doesn't change).
Add default move constructor and assignment operator if neither BOOST_NO_CXX11_RVALUE_REFERENCES nor BOOST_NO_CXX11_DEFAULTED_FUNCTIONS are defined.
Copying of voronoi_diagram is disabled because elements hold pointers which would be invalid after copying. But this would not be the case after move (allocators used by vectors doesn't change).