message: Added load_scm_model to Python bindings
  We were able to do that now because io/cvssp.hpp doesn't depend on OpenCV anymore.
  In principle, this now makes the utils/scm-to-cereal executable obsolete.
diff: #include "eos/morphablemodel/EdgeTopology.hpp"
  #include "eos/morphablemodel/MorphableModel.hpp"
  #include "eos/morphablemodel/PcaModel.hpp"
  +#include "eos/morphablemodel/io/cvssp.hpp"
  #include "eos/pca/pca.hpp"
  #include "eos/render/texture_extraction.hpp"
  @@ -213,6 +214,14 @@ PYBIND11_MODULE(eos, eos_module)
  morphablemodel_module.def("load_edge_topology", &morphablemodel::load_edge_topology, "Load a 3DMM edge topology file from a json file.", py::arg("filename"));
  morphablemodel_module.def("save_edge_topology", &morphablemodel::save_edge_topology, "Save a 3DMM edge topology file to a json file.", py::arg("edge_topology"), py::arg("filename"));
  + /**
  + * - load_scm_model()
  + */
  + morphablemodel_module.def("load_scm_model", &morphablemodel::load_scm_model,
  + "Load a shape and color model from a .scm file containing a Morphable Model in "
  + "the Surrey CVSSP binary format.",
  + py::arg("model_filename"), py::arg("isomap_file") = cpp17::nullopt);
  +
  /**
  * Bindings for the eos::pca namespace:
  * - Covariance
  