libvisual: NEWS: Add release date of 0.4.0

Author: hartwork

libvisual/NEWS

@@ -3,7 +3,7 @@ of Libvisual.
 
 These are only visible changes, for more details look at the ChangeLog.
 
-New in 0.4.0: xxxx-xx-xx:
+New in 0.4.0: 2006-03-20:
 * Real time timestamping support. (Dennis)
 * Will unref plugins that don't match the ABI version. (Dennis)
 * Added VisRectangle system. (Dennis)