Problem: There's no way to connect to authenticated cassandra clusters.
Problem: There's no way to connect to authenticated cassandra clusters.

Solution:

Enable the user to specify credentials in their joplin configuration.

Eg:

```clojure
{:migrators {:cass "migrations/migrators/cass"}
 :seeds {:cass "migrations.seeds.cass/run"}
 :databases {:cass-dev {:type :cass :hosts ["localhost"] :keyspace "foo"}
             :cass-stage {:type :cass :hosts ["host1" "host2" "host3"]
                          :keyspace "foo"
                          :credentials {:user #env CASSANDRA_USER
                                        :password #env CASSANDRA_PASSWORD}}}
 :environments {:dev [{:db :cass-dev :migrator :cass :seed :cass}]
                :stage [{:db :cass-stage :migrator :cass :seed :cass}]}}
```

juxt/joplin