Added the support of a logging context

src/Monolog/Handler/FirePHPHandler.php

@@ -79,7 +79,7 @@ class FirePHPHandler extends AbstractProcessingHandler
         // but we're not taking advantage of that (yet), so we're using "1" for simplicity's sake.
         return $this->createHeader(
             array(1, 1, 1, self::$messageIndex++),
-            $record['message']
+            $record['formatted']
         );
     }