Fixed xdebug version for PHP 5.6 and 7.0

src/extensions.ts

@@ -13,7 +13,10 @@ export async function getXdebugVersion(version: string): Promise<string> {
     case '5.4':
       return '2.4.1';
     case '5.5':
+    case '5.6':
       return '2.5.5';
+    case '7.0':
+      return '2.7.2';
     default:
       return '2.9.6';
   }