- Add stats command.
- Add monitor command.  The code is ugly and should be refactored.
- Add kestrel subscribe client.
- Provide the actual data the parser receive on unexpected reply.
- Decrease verbosity.
- Make batch size configurable.
- CONFIRM actually returns a reply.
- Rename 'single' to 'oneline' for consistency.
- Move example code out of the erlkestrel.erl.
- Refactor some reporting.