* 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
* get_prop implementation in abstract and data classes
* Implement set_prop
* Change handling
* Array key exists
* set_object_read
* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Spacing
* Fix comment
* wc_implode_text_attributes helper function
Closes#3484 and Closes#3143. Pinging @thenbrent as the handler was
originally his idea and I've killed it.
@helgatheviking In 2.1, add to cart URLs will only be used in loops, so
conditonal logic should no longer be neccessary. Single templates post
to themselves without the need for the URL.
Mike Jolley
Justin Shreve
Fredrik Forsmo
Claudio Sanches
shivapoudel
Patrick Rauland
Gregory K