Updated Drupal to 8.6. This goes with the following updates because it's possible...
[yaffs-website] / web / core / lib / Drupal / Component / HttpFoundation /
drwxr-xr-x   ..
-rw-r--r-- 18002 LICENSE.txt
-rw-r--r-- 375 README.txt
-rw-r--r-- 2049 SecuredRedirectResponse.php
-rw-r--r-- 616 TESTING.txt
-rw-r--r-- 372 composer.json