* args is not used any more - remove todo
* Added test for attributes
* wc_get_price_excluding_tax usage
* parent usage
* Fix rating counts
* Test fixes
* Cleanup after tests
* Make sure status transition code runs even during API calls, not just in admin.
* Default visibility
* Fix attribute setting in API
* Use get name instead of get title
* variation id usage
* Improved cross sell templates
* variation_data
* Grouped product sync
* Notices
* Sync is not needed in API
* Delete
* Rename interfaces
* Update counts in data store
`_deprecated_function` has conditional which is checking if third param (replacement) is null. Passing replacement as empty string to this function will fail this test and the end of triggered error will look like this: `Use instead.` instead of `with no alternative available.`. This PR removes all occurrences of empty strings in this function.
* Started on variation changes
* Stock functions
* Variation class
* Bulk change ->id to get_id() to fix variation form display
* Missing status
* Fix add to cart
* Start on stored data save
* save variation
* Save_variations
* Variation edit panel
* Save variations code works.
* Remove stored data code and fix save
* Improve legacy class
* wc_bool_to_string
* prepare_set_attributes
* Use wc_get_products
* More feedback fixes
* Feedback fixes
Mike Jolley
Justin Shreve
Krzysztof Grabania