Questions about enable_materialized_views and enable_transient_replication

Thanks for providing this useful container.

I have a question about two cassandra configs: `enable_materialized_views` and `enable_transient_replication.` It seems the [official document](http://cassandra.apache.org/doc/latest/configuration/cassandra_config_file.html) says "Materialized views are considered experimental and are not recommended for production use." And the default value for these two parameters are **False** in the document. They say they will disable them in Cassandra 4.

However, in the latest version of Cassandra (3.11.4), the default value for them are still **True**, as is the setting in your container's cassandra.yaml.

Shall we disable them manually for now?
Thanks!