Enhancement

- Re-enabled the onProjectChange function, and upgraded it to TDB2.
  Now it does a lot less, which is another way of saying it is faster.

src/commands/CmdLog.cpp

@@ -66,9 +66,7 @@ int CmdLog::execute (std::string& output)
 
   context.tdb2.add (task);
 
-/*
-  TODO context.footnote (onProjectChange (task));
-*/
+  context.footnote (onProjectChange (task));
   context.tdb2.commit ();
 
   if (context.config.getBoolean ("echo.command"))