Leverage Lua for simple actions

[mbainter]

First - thanks for making it. 100% less coffeescript is welcome, and this is just the right opportunity to get me motivated to learn GO.

Now for the issue itself -- If you haven't seen it, you should take a look at Heka. It's obviously an entirely different tool from this, but they have done some incredible work with integrating Lua. By leveraging Lua's JIT strengths, you can customize it's processing on the fly by pushing lua modules into it, with great protections against those modules bringing down the whole system.

Integrating a similar concept here would be really powerful. Is that something you're open to for this project, or do you envision it as staying 100% Go?