Add TLC
CONTRIBUTOR
I have reduced the size of the dummy file and added README sections as you suggested. 
2020-12-04T00:35:49Z
https://github.com/huggingface/datasets/pull/1059#issuecomment-738473152
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2020-12-04T00:35:49Z
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CONTRIBUTOR
I have a little issue to run the test. It seems there is no failed case in my machine. 
2020-12-04T00:39:59Z
https://github.com/huggingface/datasets/pull/1059#issuecomment-738474618
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MEMBER
Thanks !
It looks like the PR includes changes to many other files than the ones of `tlc`, can you create another branch and another PR ?
2020-12-04T11:08:50Z
https://github.com/huggingface/datasets/pull/1059#issuecomment-738723700
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Added TLC dataset