removed the COD amount rounding

Different currencies have different rules regarding Cash on Delivery. GLS can only collect a certain fraction of HUF in cash. That makes cash collection difficult in other currencies, e.g. Romanian RON or European EUR.
Thus, the rounding should be handled by the client and not the library for now.

src/API.php

@@ -101,9 +101,7 @@ public function getParcelNumbers($parcel_data) {
             // validate parcel data
             $this->validateParcelPrepare($parcel);
 
-			$parcel['CodCurr'] = $parcel['CodCurr'] ?? 'HUF';
-            // the smallest fraction is 5 for COD amount
-            $parcel['CodAmount'] = round((float)$parcel['CodAmount'] / 5, 0) * 5;
+	    	$parcel['CodCurr'] = $parcel['CodCurr'] ?? 'HUF';
             $data .= "<Shipment SenderID=\"" . $this->config["client_number"] . "\" ExpSenderID=\"\" PickupDate=\"" . (isset($parcel["PickupDate"]) ? date(DATE_ATOM, strtotime($parcel["PickupDate"])) : date(DATE_ATOM)) . "\" ClientRef=\"" . $parcel['ClientRef'] . "\" CODAmount=\"" . $parcel['CodAmount'] . "\" CODCurr=\"" . $parcel['CodCurr'] . "\" CODRef=\"" . $parcel['CodRef'] . "\" PCount=\"" . (isset($parcel["Pcount"]) ? $parcel["Pcount"] : "1") . "\" Info=\"".(isset($parcel['ConsigComment']) ? $parcel['ConsigComment'] : "" ) . "\">";
             $data .= "<From Name=\"" . $parcel['SenderName'] . "\" Address=\"" . $parcel['SenderAddress'] . "\" ZipCode=\"" . $parcel['SenderZipcode'] . "\" City=\"" . $parcel['SenderCity'] . "\" CtrCode=\"" . $parcel['SenderCountry'] . "\" ContactName=\"" . $parcel['SenderContact'] . "\" ContactPhone=\"" . $parcel['SenderPhone'] . "\" EmailAddress=\"" . $parcel['SenderEmail'] . "\" />";
             $data .= "<To Name=\"" . $parcel['ConsigName'] . "\" Address=\"" . $parcel['ConsigAddress'] . "\" ZipCode=\"" . $parcel['ConsigZipcode'] . "\" City=\"" . $parcel['ConsigCity'] . "\" CtrCode=\"" . $parcel['ConsigCountry'] . "\" ContactName=\"" . $parcel['ConsigContact'] . " #" . $parcel["ClientRef"] . "\" ContactPhone=\"" . $parcel["ConsigPhone"] . "\" EmailAddress=\"" . $parcel["ConsigEmail"] . "\" />";
@@ -421,4 +419,4 @@ private function validateParcelPrepare ($data) {
             echo $exception->getFullMessage();
         }
     }
-}
+}