don’t start a session for wp-cron

Possible fix for #85 and #86
Fixes #82

Author: andrewminion-luminfire

src/Settings.php

@@ -99,7 +99,7 @@ public static function init() {
 
     public static function registerSession()
     {
-        if( !session_id() ) {
+        if( !session_id() && !defined( 'DOING_CRON' )) {
             session_start();
         }
     }