2/24/93 (Version 1.1)

Now the random dither is always enabled now (used to be enabled only
with -r); now disabled with -nr.

The Red/Green/Blue gamma is now at 1.0 for default values (turns out
that color correction is useful for our Digital monitors).

Added a new colorspace conversion function to make the displayer
compliant with H.261 and MPEG specifications; this is the CCIR 601
digital conversion.  The JPEG JFIF YUV->RGB mode is used default; the
CCIR YUV->RGB mode can be specified with -C.

Changed the decimation calculation routine to be more correct.

4/7/93 (Version 1.2)

Changed the colormaps to be compliant with R4 and above with
XSetWindowColormap.  This avoids annoying parity problems with the X
display.  The previous version explicitly installs and uninstalls
maps, which is sometimes bad when an event is dropped...

The -FC mode is allowed which gives full uncompressed colormap YUV
values.  The Colormap generation is slightly different to ensure a bit
better image quality.

6/14/93 (Version 1.2.1)

Minor change in the documentation.  YUV becomes YCbCr in description.
The program is otherwise unchanged.

Added cyuv2ppm and ppm2cyuv programs which allow conversion between
the PPM formats.

9/21/93 (Version 1.2.2)

Changed int CreatedColors to unsigned long CreatedColors...

