Changed variable names.
Rephrased a warning message.
Added the logged-in check for multi-sites and delayed the search response to let the site being fully loaded.
Fixed a typo.
Removed white spaces.
Fixed the wrong information in a comment.
- Made the `validation_{instantiated class name}_{section id}_{field id}` and `validation_{instantiated class name}_{field id}` hooks being triggered only when the section or field belongs to the page that the form is submitted.
- Added a change log item.
- Advanced the version number.
- Applied the changes to the minified version.