Flag for verbose on messaging, and well as Warnings and Exceptions

In principle, we can have 3 types of messages (@alessandro.maissen please correct me if I am wrong):

• Warning: these are indications to all users that some internal modifications, perhaps not expected, were done in order to allow the rest of process to function.
• Exceptions: to trap possible wrong cases
• Prompted messages: provided to the user to indicate the processes that are occurring, as well to facilitate other operations (e.g. provide the names of performance attributes)

For the prompted messages, we should provide flag for not verbosing, and remove all messages.

Besides, Perhaps warning and exceptions we should log them.

Please @all , provide your ideas here, and best practices