Removed get_dest functions. Use the get_nodes function and the the get_dest with either a simplex set or a node as input parameter.
Replaced the orient functions with two get_sorted_nodes functions.
Update from vector to SimplexSet where not already updated + clean up.
Simplified the cos_dihedral_angle function.
Using const references.
Replacing copy constructor with move constructor in Simplex class. Using the -= operator to remove face and co face of a simplex.
Added push_back, push_front and swap functions to SimplexSet.
SimplexSet class does not expose std::vector.
Minor clean up and speed improvements.