Add a delete method that removes the cart from the session and the database
Correct a wrong usage of the python_2_unicode_compatible decorator
Add `empty` method
changed license from GPLv3 to LGPL to resolve Issue #8, thanks @ydm
Cart.empty is now a property
Merge https://github.com/bmentges/django-cart
Apply the LGPL license to the project which @bmentges nicely adopted for the original django-cart