v4.0.0

Feature

• Port Client's request method to AsyncClient (bd9edb2)
• Refactor existing methods to use newer request (0ddc5c2)

Fix

• Remove Comment resource as it's no longer in the Deezer API (6bb0647)
• Make Resource.get_relation work with Tornado client (0980055)

Breaking

• the advanced_search method no longer exists and has been merged into the regular search method. (46cf5f1)
• The get_object, object_url and url methods have been removed from the Client and AsyncClient classes (3b7c167)
• The Client.get_radios method has been removed and replaced by Client.list_radios (b7d940f)
• The Client.get_genres method has been removed and replaced by Client.list_genres (2e284af)
• A DeezerErrorResponse is now raised in case of error, instead of ValueError (0ddc5c2)