GDL - GNU Data Language Files

NEW IN THIS RELEASE:

* LIST and HASH are fully supported
     even left-side struct access is possible e. g.: 
     GDL> h = HASH('key',{tag1:1})  &  h['key'].tag1 = 3

* CURSOR: full support for CURSOR command, which is interruptable by control-c 
     and supports all options.
   - Added cursor-related functions TVCRS and command EMPTY. 
   - Added DEVICE options CURSOR_CROSSHAIR, CURSOR_STANDARD, CURSOR_ORIGINAL and 
     GET/SET_GRAPHICS_FUNCTION (GXoR, GXand, etc). 
   - Disabled by default the focus in the X11 graphics windows as IDL does and 
     repositioned WINDOWS by default to top-right of screen.

* PLOT, OPLOT: All keywords supported (except Z and T3D),
     Correct handling of log/DATA/NORMAL/DEVICE coordinates and CLIPPING.

* PLOTS: As above, plus /CONTINUE

* XYOUTS: As above, plus one-argument support (XYOUTS,"string"). 
   - Enhancements: Vector support for color, size, angle, ...

* PSYMs Shapes now identical to IDL's.

* CONTOUR: Support of most options (except ZVALUE, ZAXIS,CELL_FILL, 
     C_ANNOTATIONS, CLOSED, DOWNHILL, IRREGULAR, TRIANGULATION,PATH_XXX)
     Correct implementation of Z, [X,Y], i.e., contours may be skewed,
     rotated, etc depending on X and Y.
   Extensions with respect to IDL:
   - a new ZLOG option generates log contours as well.
   - C_ORIENTATION, C_SPACING are also vectors.
   - log axes give better results
   - good contouring of Not-A-Number values in Z and MIN_VALUE/MAX_VALUE
   - CLIPPING ok.
   - AXIS and boxes in plots: all [XYZ]TICK[XXX] options supported except 
     TICKV and a few TICKFORMAT specifics.

* .RESET_SESSION and .FULL_RESET_SESSION commands

* Significant speed improvement when compiled with Eigen3 library.     
     In MATRIX_MULTIPLY() (and # operators), especially on multi-cores,
     basic load managment included.

* CHOLSOL/CHOLDC and LA_CHOLSOL/LA_CHOLDC using Eigen3

* many bug fixes and speed improvements