* Security: Stop XSS attacks in comments when highlighting post content.
* Minor fix: Add support for disabling the Restrict Content Pro 'Hide restricted posts' option.
* Minor fix: Avoid errors from non-existing author_name values.
* Minor fix: More connection problems with PDF server are classified as temporary.
* Minor fix: Wiping server errors for attachments didn't always work correctly.
* Minor fix: Click tracking permalinks are no longer passed through `esc_attr()` as that would...