* Add support for deleting Relay products and SKUs
1.28.0
* Add an automatic paginating iterator to lists available via `auto_paging_iter` * List objects are now iterable * Error messages set to `None` are now handled properly * The `all` method on list objects has been deprecated in favor of `list` * Calls to `instance_url` are now side effect free
1.27.1
* Official Python 3.4 & 3.5 compatibility * Add configurable HTTP client * Add ability to delete attributes