Model output should be dict
# 🚀 Feature request

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I think model output should be a dict. Since dict are more clearly than tuple, we do not know what output[1] means, but we do know output["pooled_ouptut"] means.
 
https://github.com/huggingface/transformers#models-always-output-tuples

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We will soon convert the outputs of models to named tuples to that it will be more readable :-) 