* Add a warning for GP Regressor if optimized hyperparameter matches one of its bounds
* pep8 fix
* Add a test and use np.isclose
* More verbose warning message
* remove print
* Ad a more precise warning and update tests
* fix warning and update tests
* fix test dims
* fix multiple dimensions test
* fix pep8
* change variable name
* add warning for GP classifier
* tests for gpc
* pep8 fix
* put the warning in a function
* add comment to warning function
* update name in gpr and gpc
* update whats_new
* update whats_new
* update whats_new
* remove merge conflict text
* add WhiteKernel
* put the log in the last version