MAINT make imbalanced-learn compatible with scikit-learn 1.+

[glemaitre]

Update code to make sure that scikit-learn works with version 1.0+

[codecov]

Codecov Report

Base: 97.19% // Head: 92.61% // Decreases project coverage by -4.58% ⚠️

Coverage data is based on head (c4e8b75) compared to base (6176807).
Patch coverage: 73.63% of modified lines in pull request are covered.

❗ Current head c4e8b75 differs from pull request most recent head 7beb41a. Consider uploading reports for the commit 7beb41a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #946      +/-   ##
==========================================
- Coverage   97.19%   92.61%   -4.59%     
==========================================
  Files          97       94       -3     
  Lines        6348     6361      +13     
  Branches      711      886     +175     
==========================================
- Hits         6170     5891     -279     
- Misses        106      398     +292     
  Partials       72       72              

Impacted Files	Coverage Δ
imblearn/combine/_smote_enn.py	100.00% <ø> (ø)
imblearn/combine/_smote_tomek.py	100.00% <ø> (ø)
imblearn/metrics/_classification.py	92.12% <ø> (ø)
imblearn/over_sampling/_adasyn.py	88.05% <ø> (ø)
imblearn/over_sampling/_random_over_sampler.py	100.00% <ø> (ø)
imblearn/over_sampling/_smote/base.py	99.01% <ø> (ø)
imblearn/over_sampling/_smote/filter.py	88.33% <ø> (ø)
imblearn/over_sampling/base.py	100.00% <ø> (ø)
imblearn/pipeline.py	93.47% <ø> (-1.09%)	⬇️
...mpling/_prototype_generation/_cluster_centroids.py	100.00% <ø> (ø)
... and 29 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[hayesall]

#936 and #938 should resolve the build issues. Should we merge them in first?

[glemaitre]

Thanks for pointing that out. I will delay the mode deprecating for afterwards. I want first to fix all failures for 1.2 and check what we need to do to be compatible with 1.1 and 1.0. Then, I will modify the CI and finally make a new pass on all remaining deprecations.