…. With this new getter we do not need to rechange the model when using metrics for classification

…setup and adapt worflows for the wrapper

…dd doc on operator and model's expectations

…n release

… a typo error in setup

…PyTorch for Callable methods, fix pep y

…ctionnality in the metric instead), fix regression_operator, update the tests and enhance the documentation

…oid) to the model when computing metrics (but not for generating explanations), add the corrsponding tests and documentation

…TorchWrapper class without the need of installing pytorch, change methods name to more explicit ones, improve the grad method, assert evaluation mode of pytorch module, update the test for the refactoring of the wrapper and also following operator and metric refactoring, add more information in the documentation

…adability

… between zero and one

… on which axis the computation is done