Merge pull request #151 from multnomah-county-it/dev

Log update response only if debug/update is true

src/Libilsws.php

@@ -2616,7 +2616,7 @@ public function update_phone_list ($phone_list, $token = null, $patron_key = nul
         $response = $this->send_query($this->base_url . "/user/patron/key/$patron_key", $token, $json, 'PUT', $options);
 
         if ( $this->config['debug']['update'] ) {
-            print_r($response);
+            error_log('DEBUG_UPDATE ' . json_encode($response, JSON_PRETTY_PRINT), 0);
         }
 
         $return_code = 0;