Laravel 5.6 updates

Travis config update

Removed HHVM script as Laravel no longer support HHVM after releasing 5.3

vendor/symfony/http-kernel/Profiler/Profile.php

@@ -43,10 +43,7 @@ class Profile
      */
     private $children = array();
 
-    /**
-     * @param string $token The token
-     */
-    public function __construct($token)
+    public function __construct(string $token)
     {
         $this->token = $token;
     }
@@ -74,7 +71,7 @@ class Profile
     /**
      * Sets the parent token.
      */
-    public function setParent(Profile $parent)
+    public function setParent(self $parent)
     {
         $this->parent = $parent;
     }
@@ -213,12 +210,23 @@ class Profile
     /**
      * Adds the child token.
      */
-    public function addChild(Profile $child)
+    public function addChild(self $child)
     {
         $this->children[] = $child;
         $child->setParent($this);
     }
 
+    public function getChildByToken(string $token): ?self
+    {
+        foreach ($this->children as $child) {
+            if ($token === $child->getToken()) {
+                return $child;
+            }
+        }
+
+        return null;
+    }
+
     /**
      * Gets a Collector by name.
      *