New Features
- Extend binarize target scorers to support stacking estimators, i.e., use binarize target estimator as meta estimator.
- Adds `cv_results` attributes to `estimator_attributes` tool.
- Adds loading prefitted model for prediction in `keras_model_builder` tool.
- Adds `save_weights` and `load_weights` for keras classifier/regressor models.
- Merges keras model builder
Changes
- Refactors the multiple scoring input for searchcv and simplify cv_results output.
- Refactors import system, get rid of exec import.
Bug Fixes
- Fixes stacking estimators whitelist issue and other import issues.
- Fixes bases typo error in stacking ensembles tool
- Fixes multiple scoring error in train_test_split mode