Travis fix

Remove PHP 5.3;
Fix notice when no REQUEST_METHOD

.travis.yml

@@ -13,11 +13,6 @@ php:
   - '7.2'
   - '7.3'
 
-matrix:
-  include:
-    - php: '5.3'
-      dist: precise
-
 notifications:
   email:
     on_success: change

qa-src/Http/Router.php

@@ -37,7 +37,7 @@ class Router
 	public function __construct()
 	{
 		// implicity support HEAD requests (PHP takes care of removing the response body for us)
-		$method = strtoupper($_SERVER['REQUEST_METHOD']);
+		$method = isset($_SERVER['REQUEST_METHOD']) ? strtoupper($_SERVER['REQUEST_METHOD']) : 'GET';
 		$this->httpMethod = ($method === 'HEAD' ? 'GET' : $method);
 	}