title: Order Id of Android subscriptions
body: <p>According to Google's documentation order ids of subscriptions have following format:</p>
  
  <p>12999556515565155651.5565135565155651 (base order number)
  12999556515565155651.5565135565155651..0 (initial purchase orderID)
  12999556515565155651.5565135565155651..1 (first recurrence orderID)
  12999556515565155651.5565135565155651..2 (second recurrence orderID)</p>
  
  <p>I feel confused with dots in order id. As I understood it's impossible to test this without making real purchase. But I can't wait for a month to test it. I created test subscription with 7 days trial. After first purchase it got me JSON with order id: </p>
  
  <p>12999763169054705758.1316440597013773 (trial)</p>
  
  <p>Can someone confirm that next purchases will follow format?
  12999763169054705758.1316440597013773..0 (first purchase after trial expired)
  12999763169054705758.1316440597013773..1 (second purchase)
  ....
  12999763169054705758.1316440597013773.25 (25th purchase) ?</p>
  
  <p>Also if I setup subscription with no trial period that will first purchase have order id
  12999763169054705758.1316440597013773..0 ?</p>
  
  <p>Last question. Does getPurchases() return only the JSON with last order id or all records including previous purchases?</p>
  
  <p>Thanks in advance.</p>