* Queued sessions are now {{Ip, Port}, Session_Pid} for debugging
* Add elysium_config:is_elysium_config_enabled/1
* Add elysium_buffer_sup to own session and pending request ets_buffers
* Remove elysium_overload
* Replace elysium_overload with elysium_bs_serial
* Introduce Buffering Strategy parameter when spike uses all sessions
* Allow elysium_queue to be disabled on startup
* Add max_restart_delay and stochastic restart to avoid thundering herds
* Add Consistency parameter to all CQL requests
* Allow multiple Cassandra nodes with round-robin connections
* Allow multiple options for configuration data
* Accept vbisect dictionary to use for all config calls (read-only binary)
* Use compiled module behaviour 'elysium_config' for concurrency
* Added N chances in 1M uses that a session will be replaced
* FIFO queue of supervised seestar Cassandra sessions