[Feature request] Add Toronto BookCorpus dataset
{'login': 'jarednielsen', 'id': 4564897, 'node_id': 'MDQ6VXNlcjQ1NjQ4OTc=', 'avatar_url': 'https://avatars.githubusercontent.com/u/4564897?v=4', 'gravatar_id': '', 'url': 'https://api.github.com/users/jarednielsen', 'html_url': 'https://github.com/jarednielsen', 'followers_url': 'https://api.github.com/users/jarednielsen/followers', 'following_url': 'https://api.github.com/users/jarednielsen/following{/other_user}', 'gists_url': 'https://api.github.com/users/jarednielsen/gists{/gist_id}', 'starred_url': 'https://api.github.com/users/jarednielsen/starred{/owner}{/repo}', 'subscriptions_url': 'https://api.github.com/users/jarednielsen/subscriptions', 'organizations_url': 'https://api.github.com/users/jarednielsen/orgs', 'repos_url': 'https://api.github.com/users/jarednielsen/repos', 'events_url': 'https://api.github.com/users/jarednielsen/events{/privacy}', 'received_events_url': 'https://api.github.com/users/jarednielsen/received_events', 'type': 'User', 'site_admin': False}
[{'id': 2067376369, 'node_id': 'MDU6TGFiZWwyMDY3Mzc2MzY5', 'url': 'https://api.github.com/repos/huggingface/datasets/labels/dataset%20request', 'name': 'dataset request', 'color': 'e99695', 'default': False, 'description': 'Requesting to add a new dataset'}]
[]
As far as I understand, `wikitext` is refer to `WikiText-103` and `WikiText-2` that created by researchers in Salesforce, and mostly used in traditional language modeling.

You might want to say `wikipedia`, a dump from wikimedia foundation.

Also I would like to have Toronto BookCorpus too ! Though it involves copyright problem... Hi, @lhoestq, just a reminder that this is solved by #248 .😉 
I know the copyright/distribution of this one is complex, but it would be great to have! That, combined with the existing `wikitext`, would provide a complete dataset for pretraining models like BERT.
{'url': 'https://api.github.com/repos/huggingface/datasets/issues/131/reactions', 'total_count': 1, '+1': 1, '-1': 0, 'laugh': 0, 'hooray': 0, 'confused': 0, 'heart': 0, 'rocket': 0, 'eyes': 0}