New features:

• ClickHouse settings can be configured at shard/replica level
• Custom ClickHouse configuration files may be supplied both for 'users.d' and 'config.d' sections using 'users.d/my_users.xml:' syntax.
• Operator is registered as a finalizer for CHI, so CHI deletion is more reliable now.

Bug fixes:

• Operator does not attempt to create a schema when cluster is rolled over initially anymore. Fixes #479 and may improve #478 as well
• Schema creation logic when adding new shards/replicas has been improved to address #308
• Operator restart should not cause ClickHouse pods restart anymore in most cases

Important Note: CHI can not be deleted without operator installed anymore. Also, if operator and CHI is installed in one namespace, and namespace is deleted, it may stuck forever in 'Terminating' state due to an arbitrary deletion sequence.