TODO
               ------

6.0.0 (can be done, but cannot stop 6.0.0 release)
-----------------------------------------------------------------
- Cygwin/Windows and other (Non-Linux) platform specific problems
- i18n translations


> 6.1.0 
-------

Vector TODO: see doc/vector/TODO

Missing modules:
- write Vect_map_exists() and implement in g.remove and v.digit -n (radim)

- add '-d' dissolve to v.reclass
- add 'where=' to v.to.rast
- add '-3' for 3D distance calculation in v.distance

- change default color white to black:
   (better define DEFAULT_FG_COLOR, DEFAULT_BG_COLOR in gis.h, update in 5.0 and 5.7)
display/d.erase/main.c:	color->answer = "white";	/* set default color! */
display/d.path/main.c:    bgcolor_opt->answer     = "white" ;
display/d.barscale/main.c:	opt2->answer     = "white" ;
display/d.legend/main.c:	opt2->answer     = "white" ;
display/d.colortable/main.c:	opt2->answer     = "white" ;
display/d.geodesic/main.c:    parm.lcolor->answer     = "white";
display/d.geodesic/main.c:	line_color = D_translate_color (parm.lcolor->answer = "white");
display/d.geodesic/main.c:    if(strcmp (parm.lcolor->answer, "white") == 0)
display/d.graph/main.c:	opt2->answer     = "white" ;
display/d.histogram/main.c:	opt2->answer     = "white" ;
display/d.mapgraph/main.c:	opt2->answer     = "white" ;
display/d.measure/main.c:	parm.c2->answer = "white";
display/d.rast.arrow/arrow.c:    opt5->answer     = "white" ;
display/d.rhumbline/main.c:	parm.lcolor->answer     = "white";
display/d.rhumbline/main.c:		line_color = D_translate_color (parm.lcolor->answer = "white");
display/d.rhumbline/main.c:	if(strcmp (parm.lcolor->answer, "white") == 0)
display/d.scale/main.c:	opt2->answer     = "white" ;
display/d.title/main.c:	opt2->answer     = "white" ;
display/d.linegraph/linegraph.c:    t_color_opt->answer     = "white" ;

- merge of image libraries:
  A)
    - lib/imagery/: standard lib, in use (i.* except for i.points3, i.rectify3)
    - imagery/i.ortho.photo/libes/: standard lib, in use (i.ortho.photo, photo.*)
  B)
    - lib/image3/: never finished improvement which integrated the standard lib and
                   the ortho lib. Seems to provide also ortho rectification for
                   satellite data (i.points3, i.rectify3)
  C) 
    - merge of i.points, i.vpoints, i.points3
    - merge of i.rectify and i.rectify3
    - addition of new resampling algorithms such as bilinear, cubic convolution
      (take from r.proj?)
    - add other warping methods (maybe thin splines from GDAL?)
    - implement/finish linewise ortho-rectification of satellite data