Wp 5.7.2 fix

[zamans78]

Made compatible with WordPress 5.7.2

Fix for jQuery deprecated function

Changed function .change() to .on('change', function(){})

Changed jQuery(document).ready(function ($) { to jQuery(function ($) {

Changed Hook settings(see comment):

/**
     * Hooks to 'init' and resgisters new post status type
     *
     * @since 1.0.0
     */
    public function register_post_status()
    {
        register_post_status('limited', array(
            'label' => esc_html__('Limited', 'wpsite-limit-posts'),
            'public' => false,  // Changed from true to false.
            'exclude_from_search' => false,
            'show_in_admin_all_list' => true,
            'show_in_admin_status_list' => true,
            'label_count' => _n_noop('Limited <span class="count">(%s)</span>', 'Limited <span class="count">(%s)</span>', 'wpsite-limit-posts'),
        ));
    }