title: Custom subject for New Order Email notification in WooCommerce
body: <p>In WooCommerce I would like to set the product purchased in the &quot;new order&quot; email subject line, something like this: <code>New Order - [{product_name}] ({order_number}) - {order_date}</code></p>
  <p>I understand that <code>product_name</code> cant be used probably due to multiple products is there a way I can still do this by filtering product ordered or just allowing multiple products as not many multi orders go through.</p>
  <p>I am very new to modifying theme code.</p>