Building:
- Display areas & waypoints statistics in operator<<().
- Use an unordered_map for areas.
- Use an unordered_set for waypoints.
(instead of two vectors)
Area: display building name in operator<<().
- Where possible, use initialisation lists in class definition instead
of explicit variable initialisations in source file.
- Rename some variables (use of "source" in copy constructors and
operators…).
- Suppress useless Doxygen comments, allow non-documented members in
Doxyfile.
Matteo Cypriani