update to zyGrib version 4.0.1:

# 2011-05-21 : zyGrib Version 4.0.1

    * User can choose visible data in the left board (right clic in the panel).
    * Bug fixed: crash sometimes with data out of the "normal" range.

# 2011-05-08 : zyGrib Version 4.0

    * NOAA data up to 8 days rather than 7.
    * Color scales.
    * Data values panel can be hidden (Ctrl+V).
    * Colors scale panel can be hidden (Ctrl+Y).
    * Warning : changes in directories structure.
    * Totally new colors scheme.
      Color scales are editable (text files colors_xxx.txt).
          o 1 ligne per threshold : v r g b
            v = threshold value
            r g b = rgb level (red, green, blue) between 0 and 255
          o values must be in ascending order
          o color is attributed to values ##less than or equal to v
            except the last which is also the color of all excess values##
          o fixed color (no interpolation) below the first value or above the last.
    * More complete list of cities (source GeoNames)
      Around 60,000 cities come with zygrib (population >= 3000).
      Around 100,000 smaller cities are available in additional files (see download page).
    * New population threshold for shown cities:
        1. population >= 1000000
        2. population >= 100000
        3. population >= 10000
        4. population >= 1000
        5. population < 1000
    * Bug fixed : values displayed for the position under the mouse are updated when the date is changed using the keyboard.
    * Bug fixed : crash (sometimes) when the mouse was moved on a POI while reading aa grib file.

(plunky)