[Collection] Collection folders

{"ops":[{"insert":"Currently, users can track collections for cards in paper, on MTGO, and Arena. With this proposed feature, users would be able to create either sub-collections or collection folders with which to further organize their cards. This could be used as a way of more accurately representing where cards in your physical collection are being stored. \n\nIf this proposed feature is of interest to you, give the thread a thumbs-up and leave your thoughts below! User interest in each feature will help us prioritize in development.\n"}]}