4digits: A guess-the-number game, aka Bulls and Cows

Version 1.1.2 (2012-05-16):
    * Fix username in high score.

Version 1.1.1 (2012-04-19):
    * Fixed manpages section.

Version 1.1 (2011-11-24):
    GUI version:
    * Fixed a bug that caused preference file and score file cannot be created for the first time and game cannot quit.
    * No longer searches glade files and help files in different places.
    * UI definition is converted from libglade to GTK+ Builder.

    CLI version:
    * Fixed a bug that caused score file cannot be created for the first time.
    * Uses the same score file with GUI version.
    * Code cleanup.
    * No longer supports Windows.

Version 1.0 (2011-07-05):
    GUI version:
    * Fully compatible with Windows. Now you can play it under Windows as well.
    * Bigger font size for input box. This looks much better.
    * Removed hint table column header. This results in a clearer GUI.
    * Change to a new logo.
    * No longer depends on python-gnome. You only need python and PyGTK.

Version 0.9 (2008-10-17):
    GUI version:
    * Program preferences is now persistent through sessions.
    * Minor user interface tweaks.
    * Much code cleanup. 

    CLI version:
    * Moved score file to ~/.4digits/.
    * Program messages are now the same as in GUI version.
    * Much code cleanup.

Version 0.8 (2007-11-19):
    GUI version:
    * Added high score saving and viewing.
    * Added a hint table by Hermann Kraus.
    * Added a FreeDesktop desktop entry file.
    * Added an installing script copied from Comix.
    * Detailed documentation.
    * Visual improvements.

    CLI version:
    * Better input handling.

Version 0.4 (2007-03-22):
    * Added GUI version.
    * CLI version renamed to 4digits-text. 4digits now launched GUI version.
    * Added HTML documentation with screenshots.

Version 0.3 (2006-11-18):
    * Improved user input processing.
    * Added command line options.
    * Improve high score function.
    * Fixed a bug causing 4digits won't quit when started from a file manager.
    * Removed help when playing game.

Version 0.2 (2006-08-14):
    * Improved input processing.
    * Added a manual page.
    * Added timing and high score function.

Version 0.1 (2005-12-18):
    * Improved random number generation.
    * Added input error handling.
    * Added help when playing game.
    * Rewrote much code.
    * Added a Makefile.

Version 0.0.1 (2004-11-05):
    * First public release.