title: Handle cart and order with REST API in Woocommerce
body: <p>I just read about the Woocommerce REST API and it seems very promising.</p>
  
  <p>But then I found out the API doesn't have any support to Sessions and Cart. </p>
  
  <p>So if someone wants to write a SPA to communicate with the WC Backend, the developer should implement the session/cart/checkout methods by himself?</p>