2004-01-17 agranig:
  * Finish player configuration.
  * Render better graphics for the grinder.
  * Implement drones (like grinders, but they can shoot and can be destroyed)
    and render some graphics for it.

2004-02-05 btrummer:
  * Find out, why scrolling the playground raises the CPU usage to 100%
    on some systems.

2004-02-29 btrummer:
  * Write some more in-game mod-files.
  * Write three short highscore mod-files (first place, made an entry,
    not enough scores for an entry).
  * Find a sample for crate pickups.
  * Find a sample for SAMBattery missile launches.

2004-05-06 btrummer:
  * Fix the key selection widgets in ControlMenu.
    Multiple key widgets must not be selectable simultaneously.

2004-05-20 btrummer:
  * Redesign the ObjectBase hierarchy. The current hierarchical approach
    has the disadvantage, that some objects partially have duplicate code.
    Find a way to extract these duplicates (e.g. the code for the physical
    model) into seperate modules/classes, which then can be used as needed.
