+2010-02-02
+ * added small kludge that allows transparent pushing animation over
+ non-black background
+ * added editor flag to Sokoban field/object elements to automatically
+ finish solved Sokoban style levels (even if they contain non-Sokoban
+ elements, which prevents auto-enabling this feature for such levels)
+
2010-01-10
* added new element "from_level_template" which is replaced by element
from level template at same playfield position when loaded (currently