A minor update with the following:
- itemPurchaseQuantity metric updated to itemsPurchased (per breaking changes to Google Analytics Reporting API going into effect Dec 1, 2022)
- New item-scoped metrics added to E-commerce section of weekly heat map (itemsAddedToCart, itemsCheckedOut, itemsViewed and itemsViewedInList)
- Don't try to track emails being read if the outgoing email has no HTML part (emails being sent manually as 'Plain text')