Feature

- New 'modified' attribute, which contains the most recent modification date,
  if a modification has occurred.

src/Task.cpp

@@ -218,6 +218,14 @@ void Task::setStart ()
   recalc_urgency = true;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+void Task::setModified ()
+{
+  char now[16];
+  sprintf (now, "%u", (unsigned int) time (NULL));
+  set ("modified", now);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 bool Task::has (const std::string& name) const
 {