Change return pred

[vtaquet]

Description

return_pred string argument is now a Boolean called ensemble. By default, ensemble = False returns the predictions from the unperturbed estimator.

Type of change

Please check options that are relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A
• Test B

Checklist:

• I have read the contributing guidelines
• I have updated the HISTORY.rst and AUTHORS.rst files
• Linting passes successfully : flake8 . --exclude=doc
• Typing passes successfully : mypy mapie examples --strict --config-file mypy.ini
• Unit tests pass successfully : pytest -vs --doctest-modules mapie
• Coverage is 100% : pytest -vs --doctest-modules --cov-branch --cov=mapie --pyargs mapie
• Documentation builds successfully : cd doc; make clean; make html

[codecov]

Codecov Report

Merging #38 (c804a2e) into master (6dcb5cb) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #38   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines          252       251    -1     
  Branches        19        19           
=========================================
- Hits           252       251    -1     

Impacted Files	Coverage Δ
mapie/estimators.py	100.00% <100.00%> (ø)
mapie/tests/test_estimators.py	100.00% <100.00%> (ø)

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