+2010-04-07
+ * added initial, experimental support for different viewport properties
+ (with "viewports" being menu/playfield area and doors; currently the
+ size of the menu/playfield area and door positions can be redefined)
+
2010-04-02
- * added initial, experimental support for different screen sizes
+ * added initial, experimental support for different window sizes
2010-03-27
* added support for native Sokoban solution files in pure 'udlrUDLR'