message: Code review : Boost minimal version is now 1.56. No more need to test if < 1.53.
diff: #include <boost/version.hpp>
  #include <boost/variant.hpp>
  -#if BOOST_VERSION >= 105400
  -#include <boost/container/static_vector.hpp>
  -#endif
  -
  #include <gudhi/Debug_utils.h>
  #include <gudhi/Alpha_complex_options.h>
  #include <CGAL/iterator.h>
  #include <CGAL/version.h>
  +#include <boost/container/static_vector.hpp>
  +
  #include <iostream>
  #include <vector>
  #include <unordered_map>
  @@ -269,11 +267,7 @@ class Alpha_complex_3d {
  using Facet = typename Alpha_shape_3::Facet;
  using Edge = typename Alpha_shape_3::Edge;
  using Alpha_vertex_handle = typename Alpha_shape_3::Vertex_handle;
  -#if BOOST_VERSION >= 105400
  using Vertex_list = boost::container::static_vector<Alpha_vertex_handle, 4>;
  -#else
  - using Vertex_list = std::vector<Alpha_vertex_handle>;
  -#endif
  public:
  /** \brief Alpha_complex constructor from a list of points.
  