- extraxt.C is new application
- Moved application code from nuage.C in a class
- Introduced Boundary_iterator
- Introduced Outlier_iterator


- Removed conversion
- Added output of the missed points in vrml2
- Added support for xyz format
- Changed Vertex* to Vertex_handle for Unique_hash_map
  otherwise it does not compile with VC6
- Removed visu_index (was a vertex data member)
- added VRML output
- replaced the dynamically allocated array with a vector in iofile_manipulator.h 

- replaced set and list in each vertex with static lists.