This is a little point release with a few small bugfixes and enhancements.

• LOCK files are automatically recovered in case of panic or dirty shutdown
• A prototype web UI is available on [ingest]store nodes, API port, /ui/ route — thanks, @xla!
• Debug logs are enhanced, and gated behind a -debug flag (default false)
• Some efficiency gains in the ingester, by using a non-newline-consuming bufio.Scanner
• Improved tests and test coverage