message: code review: fix include what you use and compute_squared_radius_smallest_orthogonal_sphere_d_object use
diff: #define ALPHA_COMPLEX_ALPHA_KERNEL_D_H_
  #include <CGAL/version.h> // for CGAL_VERSION_NR
  -#include <CGAL/Epeck_d.h> // For EXACT or SAFE version
  -#include <CGAL/Epick_d.h> // For FAST version
  -#include <Eigen/src/Core/util/Macros.h> // for EIGEN_VERSION_AT_LEAST
  +#include <Eigen/Core> // for EIGEN_VERSION_AT_LEAST
  #include <utility> // for std::make_pair
  @@ -117,7 +115,7 @@ class Alpha_kernel_d<Kernel, true> {
  template<class PointIterator>
  FT get_squared_radius(PointIterator begin, PointIterator end) const {
  - return get_sphere(begin, end).weight();
  + return kernel_.compute_squared_radius_smallest_orthogonal_sphere_d_object()(begin, end);
  }
  FT get_squared_radius(const Sphere& sph) const {
  