- small refactor improves performance 2x
reinstate callback
Don't say 'no such command' if help is requested
- have 'version' and 'version --verbose' work
- remove note about plugin-specific flags since that feature has been
removed
- remove flags for web ui (I don't think it has flags anymore)
web has flags
- emit "Elasticsearch: " before the elasticsearch version information
- Fix syslog input (LOGSTASH-1271)
- Fix negate operator (tests coming shortly)
  Syntax permitted one of two things:
    !(expression)
    ![selector]
- recompile grammar
- add more conditional tests (logical operators, unary negate, etc)
- bump beta version
Make sure each input adds the event type attribute if needed.
Use accessor.