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`
 - Fixes `expireAuthorizationCode` function for `Redis` storage 
 - Fixes `getClientKey` function for `PDO` storage 
 - Adds support for non-expiring refresh tokens