Conform to new sklearn api

[icfly2]

Made import compliant with newer API as per warning:

  File "/app/model/model.py", line 3, in <module>
    import eli5
  File "/usr/local/lib/python3.7/site-packages/eli5/__init__.py", line 13, in <module>
    from .sklearn import explain_weights_sklearn, explain_prediction_sklearn
  File "/usr/local/lib/python3.7/site-packages/eli5/sklearn/__init__.py", line 21, in <module>
    from . import transform as _
  File "/usr/local/lib/python3.7/site-packages/eli5/sklearn/transform.py", line 6, in <module>
    from sklearn.feature_selection.base import SelectorMixin  # type: ignore
  File "/usr/local/lib/python3.7/site-packages/sklearn/feature_selection/base.py", line 12, in <module>
    _raise_dep_warning_if_not_pytest(deprecated_path, correct_import_path)
  File "/usr/local/lib/python3.7/site-packages/sklearn/utils/deprecation.py", line 143, in _raise_dep_warning_if_not_pytest
    warnings.warn(message, FutureWarning)
FutureWarning: The sklearn.feature_selection.base module is  deprecated in version 0.22 and will be removed in version 0.24. The corresponding classes / functions should instead be imported from sklearn.feature_selection. Anything that cannot be imported from sklearn.feature_selection is now part of the private API.

Yes this breaks backward compatibility for sklearn but will allow eli5 to continue to work with the next version of sklearn 0.24

[jimbudarz]

As with #397, changing the requirements and setup to require sklearn >= 0.20 would maintain compatibility.

[icfly2]

sklearn version bump in requirements.txt and setup.py in #397

[codecov-io]

Codecov Report

Merging #398 (c211550) into master (017c738) will decrease coverage by 23.58%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master     #398       +/-   ##
===========================================
- Coverage   97.32%   73.74%   -23.59%     
===========================================
  Files          49       49               
  Lines        3142     3142               
  Branches      585      585               
===========================================
- Hits         3058     2317      -741     
- Misses         44      777      +733     
- Partials       40       48        +8     

Impacted Files	Coverage Δ
eli5/sklearn/transform.py	94.28% <100.00%> (-5.72%)	⬇️
eli5/keras/gradcam.py	0.00% <0.00%> (-100.00%)	⬇️
eli5/xgboost.py	4.26% <0.00%> (-95.13%)	⬇️
eli5/formatters/image.py	5.47% <0.00%> (-94.53%)	⬇️
eli5/sklearn_crfsuite/explain_weights.py	7.40% <0.00%> (-92.60%)	⬇️
eli5/keras/explain_prediction.py	4.81% <0.00%> (-91.57%)	⬇️
eli5/lightgbm.py	4.27% <0.00%> (-90.60%)	⬇️
eli5/lightning.py	5.00% <0.00%> (-90.00%)	⬇️
eli5/formatters/as_dataframe.py	5.79% <0.00%> (-89.86%)	⬇️
eli5/ipython.py	11.42% <0.00%> (-88.58%)	⬇️
... and 17 more

[lopuhin]

Thanks you! This were merged in eli5-org/eli5#2 and released to PyPI with v0.11