Update scikit-learn to 0.22.2

[desilinguist]

This PR:

• updates scikit-learn from 0.21.3 to 0.22.2
• updates test data due to this update
• updates import statements because of scikit-learn's API refactoring
• fixes a bug in logutils.py.

Note: The conda and PyPI packages for 0.22.2 have a strange name this time (0.22.2.post1). This is most likely because they needed to fix something after they had already uploaded 0.22.2 to PyPI which does not allow re-uploading with the same version number.

[pep8speaks]

Hello @desilinguist! Thanks for updating this PR.

• In the file tests/test_cv.py:

Line 318:101: E501 line too long (105 > 100 characters)

Comment last updated at 2020-03-10 23:20:37 UTC

[codecov]

Codecov Report

Merging #595 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #595   +/-   ##
=======================================
  Coverage   95.05%   95.06%           
=======================================
  Files          20       20           
  Lines        2974     2977    +3     
=======================================
+ Hits         2827     2830    +3     
  Misses        147      147           

Impacted Files	Coverage Δ
skll/learner.py	96.12% <100.00%> (+<0.01%)	⬆️
skll/logutils.py	100.00% <100.00%> (ø)

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[desilinguist]

@aoifecahill @bndgyawali @AVajpayeeJr @ananyaganesh this PR is now ready for review.

[ghost]

Is there any change in the data or experiments in the tests. In a few cases I see a bigger difference, so wondering why it is happening.

[desilinguist]

@bndgyawali there are a lot of bug fixes and changes in scikit-learn so all of the changes in the numbers are due to that.