WooCommerce Google Product Feeds 11.0.14

* Fix: Make sure prices for feeds targetting India include taxes
* Fix: Make sure products updated via REST API refresh the feed cache properly
* Fix: Setting a field to prepopulate from stock quantity could result in empty elements being output
* New: Support for some feed elements required for Google Shopping Actions

* Fix: 12-digit GTINs were sometimes not added to structured data
* Change: Avoid deprecated functions (WooCommerce 3.6 compatibility)

* Change: Add version tag to Google Review feed
* Change: Output product brand in schema for variable products if set against product or higher
* Fix: Resolve issue where some settings were reported incorrectly in system status report
* Fix: Structured data for "condition" didn't use Schema properties on simple products