v0.2.9i

• Update statediffing geth dependency, reflecting changes/improvements/fixes there
• Works with new natural PK DB schema
• Support for data dump and sql file writing modes
• Bump Go to 1.16
• Merge write and serve command
• API for adding new block ranges to queue
• Prometheus metrics
• Overlay in dockerfile
• Add additional env bindings for cli options
• Gen random node ID if none is provided
• Fix CLI