Fixes a crash under Lumen 5.2.* with Laravel Components 5.2.*

Laravel passes QueryExecuted event object and it cannot be cast as string

src/DataCollector/QueryCollector.php

@@ -80,6 +80,17 @@ public function setExplainSource($enabled, $types)
      */
     public function addQuery($query, $bindings, $time, $connection)
     {
+        // If the query argument is an instance of QueryExecuted the rest of the
+        // arguments are probably wrong types and are going to crash
+        // the colletor.
+        if ( $query instanceof \Illuminate\Database\Events\QueryExecuted )
+        {
+            $bindings = $query->bindings;
+            $time = $query->time;
+            $connection = $query->connection;
+            $query = $query->sql;
+        }
+
         $explainResults = array();
         $time = $time / 1000;
         $endTime = microtime(true);