27/02/2003: 0.1.25: - install script added;
                    - gtk and glut configure added;
                    - gtk interface started;

28/02/2003: 0.1.27: - gtk interface with gtkgl area working;

01/03/2003: 0.1.28: - graph options added;
                    - algorithms support added;
                    - file options added;
                    - configuration file support added;
                    - dot+neato redrawing added;

01/03/2003: 0.1.29: - program icon added;

01/03/2003: 0.1.30: - preferences dialog added;

02/03/2003: 0.1.31: - draw as circle function added;
                    - complete graph dialog and support added;
                    - draw as bipartite function added;
                    - complete bipartite graph dialog and support added;

02/03/2003: 0.1.32: - drawing area/glarea (view mode) switch enabled;

02/03/2003: 0.1.33: - graph drawing with gtk drawing area implemented;

03/03/2003: 0.1.34: - draw struct initialized in main(): gtk interface
                      may be compiled without gtkglarea;
                    - Makefile dependencies added with preconf;

05/03/2003: 0.1.35: - complete and bipartite graph degree selection
                      with spin buttons;

05/03/2003: 0.1.36: - set numeric bipartite degree selection;

05/03/2003: 0.1.37: - plugins support added;
                    - hello world plugin added;

08/03/2003: 0.1.38: - dependencies added with configure, and not more
                      with the preconf script;
                    - gtk version configure corrected (gtkglarea.h);
                    - open filesel changed with program argument name;
                    - DrawAsCircle called after transformation
                      algorithms;
                    - Statusbar now changed only if drawing changed;
                    - open and save filesels are rescaned if any file
                      saved;
                    - dot and neato filesels filename changed if entry
                      text changed;

08/03/2003: 0.1.39: - plugins path configuration added;
                    - datadir path configuration added;
                    - datadir change and load enabled;
                    - default view mode configuration and support added;
                    - filename display in window title;

08/03/2003: 0.1.40: - plugins read parameters functions added;
                    - added plugins info struct;
                    - plugins unloaded at exit;

09/03/2003: 0.1.41: - plugins info dialog added;
                    - plugins dir read only if it exists;

09/03/2003: 0.1.42: - configurable toolbar items added;

10/03/2003: 0.1.43: - preferences dialog ok click bug corrected;
                    - configurable toolbar items with algorithms, other
                      labels and pixmap files added;

11/03/2003: 0.1.44: - stock_items (default toolbar items) struct
                      created;

12/03/2003: 0.1.44: - i/o errors returned in message box;
                    - call errors returned in message box;

14/03/2003: 0.1.45: - create random graph function added;

14/03/2003: 0.1.46: - many color definitions (color.{c,h}) added;

15/03/2003: 0.1.47: - fit to window option added;
                    - create regular graph function partially added;

24/03/2003: 0.1.48: - regular graph function commented;
                    - file format names corrected;

31/03/2003: 0.1.49: - plugin icon in plugin menu items added;
                    - plugins window clist columns size changed;

14/06/2003: 0.1.51: - created file alghandler.{c,h}. Functions
                      related with algorithm handler were taken
                      off the file graph.{c,h} and put in
                      alghandler.{c,h}.
                    - conected plugin added.
                    - chcolor plugin added. Chordal coloring algorithm 
                      is not built-in anymore.

24/10/2003: 0.1.52: - new graph struct added: variable size graphs
                      now supported;
                    - edit vertex and label properties added;
                    - show vertex label function added;
                    - plugin flags added: noredraw flag enabled;
                    - k3 icon used for toolbar functions without and
                      icon;
                    - glut interface removed;
                    - icons directory created;
                    - AC_CHECK_GTKGL_GTKGLAREA_H macro added to
                      aclocal.m4 file;

11/11/2003: 0.1.53: - read and write graph functions corrected for new
                      graph structure;

11/11/2003: 0.1.54: - remove edge/arc functions corrected;

12/11/2003: 0.1.55: - show edge label feature added;

12/11/2003: 0.1.56: - graph/digraph consistency implemented;
					- vertex/edge properties bugs corrected;
					- AC_PATH_GTKGL macro added;
					- edge color change added;

12/11/2003: 0.1.57: - star graph feature added;
					- algorithms ported to new graph structure;
