+2004-02-21
+ * "spring push bug" reintroduced as configurable element property
+ * fixed bug with missing properties for "mole"
+ * fixed bug that showed up when fixing the above "mole" properties bug
+ * added option "can move into acid" for all movable elements
+ * fixed graphical bug for elements moving into acid
+ * changed event handling to handle all pending events before going on
+