Tag v1.3

Main Changes:

 - Adds client scope validation - all requests must be within the client allowed scope (if defined)
 - Passes `client_id` to `getDefaultScope`, even though the default storage classes ignore this
 - Easier to run the Test Suite
 - Adds `Cassandra` storage class
 - Fix the response code for user credentials grant type
 - Adds `use_crypto_tokens` config for better boiler place configuration for `CryptoTokens`