Bug Fix - #252

- Fixed bug that prevented the chaining of two attributes with
  different modifiers to effect a date range, such as:
    task ls due.after:8/1/2009 due.before:8/31/2009
  Thanks to John Florian.

src/Filter.cpp

@@ -70,7 +70,7 @@ bool Filter::pass (const Record& record) const
         return false;
     }
 
-    // Annotations are skipped.
+    // Annotations are skipped, because they are handled above.
     else if (att->name ().length () > 11 &&
              att->name ().substr (0, 11) == "annotation_")
     {