v0.1.0: Humble beginnings

This is the first release of nvmetcfg.

It includes all of the functionality I consider necessary, but might still be rough around the edges.

• Show and configure Ports, Subsystems and Namespaces.
• Strict checks to ensure only valid configuration gets applied.
• Save the state in a simple yaml file and restore it later.
• Full integration tests and unit tests ensure it functions as advertised.