Confide 4.0

# Confide 4.0

This will be a huge update where all the codebase are going to be reviewed. Some methods may change, the generators are going to be improved in order to match some best practices out there (like repositories and separated validator classes).
The 'laravelbook/ardent' dependency will be dropped.

If you have a legacy project that uses Confide, don't worry. You will be always able to specify a previous version in your `composer.json` file ;)