Add features parameter in load dataset
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This one is ready for review now
2020-07-29T13:56:48Z
https://github.com/huggingface/datasets/pull/441#issuecomment-665680028
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2020-07-29T13:56:48Z
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I changed to using features only, instead of info.
Let mw know if it sounds good to you now @thomwolf 
2020-07-30T08:38:35Z
https://github.com/huggingface/datasets/pull/441#issuecomment-666230169
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2020-07-30T12:50:43Z
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Added `features` argument in `nlp.load_dataset`.
If they don't match the data type, it raises a `ValueError`.

It's a draft PR because #440 needs to be merged first.