Adding SleepPhysionetChallenge2018 dataset

[bruAristimunha]

Most of code was from https://github.com/hubertjb/dynamic-spatial-filtering

[codecov]

Codecov Report

Attention: Patch coverage is 21.27660% with 111 lines in your changes missing coverage. Please review.

Project coverage is 86.07%. Comparing base (2c3574a) to head (1b88942).
Report is 1 commits behind head on master.

Additional details and impacted files

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- Coverage   87.55%   86.07%   -1.48%     
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  Files          68       69       +1     
  Lines        6180     6321     +141     
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+ Hits         5411     5441      +30     
- Misses        769      880     +111     

[robintibor]

Do we really need to add these large csv etc files directly into the codebase? Is there not any other way, like are they hosted somewhere and downloadable? Or is this a common practise to do this way? Seems a bit unexpected to me?

[bruAristimunha]

Indeed, I don't think it's a good idea to add this big file here. But, it seems like this is what MNE does in the other sleep dataset. Any idea how to solve this point, @agramfort and @hubertjb?

[bruAristimunha]

@gustavohenriquesr,Just to check, you had to do something to make this dataset fully work?

[gustavohenriquesr]

Hi @bruAristimunha,

In fact, curiously I had trouble creating the windows for the dataset (the labels weren't being assigned), but when I used a local copy of the sleep_physio_challe_18.py file, it worked correctly.

I didn't get to explore the code further in this regard. I'll check again and if I find anything, I'll let you know. I suggest doing a local test, if you haven't already.

[bruAristimunha]

@gustavohenriquesr, It was super silly, test set has no associated label!