woothemes/woocommerce — pull request #2936 by ascottmccauley (2013-04-11 14:30:35+00:00)
Title: taxonomy class fix

Please let me know if I'm wrong, but I don't see any reason for attributes or shipping classes to be hierarchical. This change would allows us to create a general query to get "Categories" with:
```` PHP
$taxonomies = get_object_taxonomies($post_type->name, 'objects');
foreach($taxonomies as $tax) {
if($tax->hierarchical == true) {
// 'Product Categories'}
````