WP Spinner Has Been Discontinued

Due to, or thanks to, the frequent and unpredictable release schedule of WordPress.org software, combined with the way changes are implemented in that software, WP Spinner has been discontinued.

It’s a plugin developer’s nightmare. With every release you have to pour through hundreds of tickets and scour through the WordPress source code to find out if anything was changed that will make your plugin incompatible or cause it to malfunction.