private function includes() {
    global $edd_options;

    require_once EDD_PLUGIN_DIR . 'includes/admin/settings/register-settings.php';
    $edd_options = edd_get_settings();

    require_once EDD_PLUGIN_DIR . 'includes/actions.php';
    if( file_exists( EDD_PLUGIN_DIR . 'includes/deprecated-functions.php' ) ) {
      require_once EDD_PLUGIN_DIR . 'includes/deprecated-functions.php';
    }
    require_once EDD_PLUGIN_DIR . 'includes/ajax-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/api/class-edd-api.php';
    require_once EDD_PLUGIN_DIR . 'includes/template-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/template-actions.php';
    require_once EDD_PLUGIN_DIR . 'includes/checkout/template.php';
    require_once EDD_PLUGIN_DIR . 'includes/checkout/functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/cart/class-edd-cart.php';
    require_once EDD_PLUGIN_DIR . 'includes/cart/functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/cart/template.php';
    require_once EDD_PLUGIN_DIR . 'includes/cart/actions.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-db.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-db-customers.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-db-customer-meta.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-customer-query.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-customer.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-discount.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-download.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-cache-helper.php';
    if ( defined( 'WP_CLI' ) && WP_CLI ) {
      require_once EDD_PLUGIN_DIR . 'includes/class-edd-cli.php';
    }
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-cron.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-fees.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-html-elements.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-license-handler.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-logging.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-session.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-stats.php';
    require_once EDD_PLUGIN_DIR . 'includes/class-edd-roles.php';
    require_once EDD_PLUGIN_DIR . 'includes/country-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/formatting.php';
    require_once EDD_PLUGIN_DIR . 'includes/widgets.php';
    require_once EDD_PLUGIN_DIR . 'includes/misc-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/mime-types.php';
    require_once EDD_PLUGIN_DIR . 'includes/gateways/actions.php';
    require_once EDD_PLUGIN_DIR . 'includes/gateways/functions.php';
    if ( version_compare( phpversion(), 5.3, '>' ) ) {
      require_once EDD_PLUGIN_DIR . 'includes/gateways/amazon-payments.php';
    }
    require_once EDD_PLUGIN_DIR . 'includes/gateways/paypal-standard.php';
    require_once EDD_PLUGIN_DIR . 'includes/gateways/manual.php';

    $stripe = EDD_PLUGIN_DIR . 'includes/gateways/stripe/edd-stripe.php';

    if ( file_exists( $stripe ) ) {
      require_once( $stripe );
    }

    require_once EDD_PLUGIN_DIR . 'includes/discount-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/payments/functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/payments/actions.php';
    require_once EDD_PLUGIN_DIR . 'includes/payments/class-payment-stats.php';
    require_once EDD_PLUGIN_DIR . 'includes/payments/class-payments-query.php';
    require_once EDD_PLUGIN_DIR . 'includes/payments/class-edd-payment.php';
    require_once EDD_PLUGIN_DIR . 'includes/download-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/scripts.php';
    require_once EDD_PLUGIN_DIR . 'includes/post-types.php';
    require_once EDD_PLUGIN_DIR . 'includes/plugin-compatibility.php';
    require_once EDD_PLUGIN_DIR . 'includes/emails/class-edd-emails.php';
    require_once EDD_PLUGIN_DIR . 'includes/emails/class-edd-email-tags.php';
    require_once EDD_PLUGIN_DIR . 'includes/emails/functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/emails/template.php';
    require_once EDD_PLUGIN_DIR . 'includes/emails/actions.php';
    require_once EDD_PLUGIN_DIR . 'includes/error-tracking.php';
    require_once EDD_PLUGIN_DIR . 'includes/user-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/query-filters.php';
    require_once EDD_PLUGIN_DIR . 'includes/tax-functions.php';
    require_once EDD_PLUGIN_DIR . 'includes/process-purchase.php';
    require_once EDD_PLUGIN_DIR . 'includes/login-register.php';
    require_once EDD_PLUGIN_DIR . 'includes/shortcodes.php';
    require_once EDD_PLUGIN_DIR . 'includes/admin/tracking.php'; // Must be loaded on frontend to ensure cron runs
    require_once EDD_PLUGIN_DIR . 'includes/privacy-functions.php';

    if ( is_admin() || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
      require_once EDD_PLUGIN_DIR . 'includes/admin/add-ons.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/admin-footer.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/admin-actions.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/class-edd-notices.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/admin-pages.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/dashboard-widgets.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/thickbox.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/upload-functions.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/downloads/dashboard-columns.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/customers/customers.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/customers/customer-functions.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/customers/customer-actions.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/downloads/metabox.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/downloads/contextual-help.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/discounts/contextual-help.php';
      require_once EDD_PLUGIN_DIR . 'includes/admin/discounts/discount-actions.php';