From reading the documentation it is not clear to me if I need to upgrade 1.9.11->1.9.12->1.9.13->1.9.14->1.9.15 or if I can jump directly from 1.9.11->1.9.15. It looks like the same script in each release, not sure it the script itself differs between releases.
Please elaborate for me.
Sincerely,
Steve