* support a scalar fit param
* pep8
* TST add test for desired behavior
* FIX introduce _check_fit_params to validate parameters
* DOC update whats new
* TST tests both grid-search and randomize-search
* PEP8
* DOC revert unecessary change
* TST add test for _check_fit_params
* olivier comments
* TST fixes
* DOC whats new
* DOC whats new
* TST revert type of error
* add olivier suggestions
* address olivier comments
* address thomas comments
* PEP8
* comments olivier
* TST fix test by passing X
* avoid to call twice tocsr
* add case column/row sparse in check_fit_param
* provide optional indices
* TST check content when indexing params
* PEP8
* TST update tests to check identity
* stupid fix
* use a distribution in RandomizedSearchCV
* MNT add lightgbm to one of the CI build
* move to another build
* do not install dependencies lightgbm
* MNT comments on the CI setup
* address some comments
* Test fit_params compat without dependency on lightgbm
Co-authored-by: Guillaume Lemaitre <g.lemaitre58@gmail.com>
Co-authored-by: Olivier Grisel <olivier.grisel@ensta.org>
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