GitLab

* getting default initial assumptions in test_api_utils/init_assumpt

* test_init_assumption should be corrected, test_full_multi_modal still dropping error

* improved test_init_assumption_with_inappropriate_available_operations

* delete unused imports

* update boostings evaluation strategy

update boostings evaluation strategy, added check for multi output target

test_init_assumption corrected

* remove convert_columns_types func

* change node assert names

* Automated autopep8 fixes

* check for None type in data target

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