skulumani/asteroid_dumbbell: Asteroid remeshing and landing

Now we explore the entire asteroid. Once complete then we go to a home position and remesh a specific portion that is within view. After taking more measurements of this area we pick a face with the lowest slope and then land at that point.

Also the entire mesh is defined using the CGAL Surface_mesh class. The asteroid potential function is very fast and all polyhedron potential properties are stored with the MeshData class as additional properties of the mesh.

It's all very nice now :rocket:

To split files

split -b 1024MiB 20180611_exploration_sim_control_sim_15000.hdf5 20180611_exploration_sim_control_sim_15000.hdf5.part

To combine the files