Supply some additional info in the EDD Software Licensing API update info packet, specifically: Requires WordPress Version, Compatible up to, Requires PHP Version

edd-additional-api-info.php

<?php
/*
Plugin Name: EDD Additional API Info
Plugin URI: https://gist.github.com/webaware/ccc2a77a8375da9ff02404b1fc033d05
Description: supply additional info in the EDD Software Licensing API update info packet
Version: 1
Author: WebAware
Author URI: https://shop.webaware.com.au/
*/

/*
copyright (c) 2018 WebAware Pty Ltd (email : support@webaware.com.au)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

if (!defined('ABSPATH')) {
    exit;
}

/**
* supply additional info in the update info package
* @param array $response
* @param \EDD_SL_Download $download
* @param array $readme
* @return array
*/
add_filter('edd_sl_license_readme_response', function($response, $download, $readme) {
    $response['requires']       = $readme['requires'];          // Requires WordPress Version
    $response['tested']         = $readme['tested'];            // Compatible up to
    $response['requires_php']   = $readme['requires_php'];      // Requires PHP Version

    return $response;
}, 10, 3);