v1.0 (2010-01-09)
* Temporarily disable/enable when USR1 signal is received.

v0.4 (2010-01-07)
* Restore gamma ramps on program exit.

v0.3 (2009-12-28)
* Continously adjust color temperature. One shot mode can be selected
  with a command line switch.
* Allow selection of X screen to apply adjustments to.

v0.2 (2009-12-23)
* Add a different method for setting the gamma ramps. It uses the
  VidMode extension.

v0.1 (2009-11-04)
* Initial release.