* Fix - Resolved an issue in the REST API that returned a cached 'Group of' value.
* Fix - Resolved a fatal error triggered by the REST API when trying to set a 'Group of' value with an empty Min/Max Quantity.
* New - Added activation notice.
* Tweak - Updated the way of identifying hydration context in Store API requests.
* Fix - Fixed a bug where variation notices could be incorrectly displayed.
