GitLab

* added example about custom feval with sklearn wrapper

* fixed pylint

* added new example in contents

* unified run example commands for Windows and Linux

* added note about comments in examples conf files

* improved sklearn interface; added sklearns' tests

* moved best_score into the if statement

* improved docstrings; simplified LGBMCheckConsistentLength

* fixed typo

* pylint

* updated example

* fixed Ranker interface

* added missed boosting_type

* fixed more comfortable autocomplete without unused objects

* removed check for None of eval_at

* fixed according to review

* fixed typo

* added description of fit return type

* dictionary->dict for short

* markdown cleanup

* expose feature importance to c_api

* support type=gain

* remove dump model from examples and tests temporarily because it's unstable

* use double instead of float

* add @property to sklearn interface

* add deprecated; fix binary_metric

* add gridsearch example for python sklearn

* reset_learning_rate->reset_parameter

* make callbacks public

* add feature importances in python; add pandas support

* solve best_iteration issue

1. merge python-package
2. add dump model to json
3. fix bugs
4. clean code with pylint
5. update python examples