0.11.0

Changes

• Mark various model fields as optional, to increase backwards compatibility
• Use simple status events where possible, eg. "STATUS LOAD"
• Make object interface classes more closely mirror the Vantage object interfaces
• Add get_version request helper to ConfigClient
• Warn about failed command_client commands

Breaking

• Bump minimum Python version to 3.10 so we can use kw_only on dataclasses
• Renamed command_client.interfaces to command_client.object_interfaces
• Remove ChildObject class, use Parent class composition instead
• Drop last_updated field from Master objects