Clarify programming interface evolution

I would like to clarify software development options [according to a discussion offer](https://github.com/veithen/knetstat/commit/eb65ef89c8a30b5bd8d814ae758b91c6dac8777a#commitcomment-35185950 "Improvements").
:crystal_ball: Which data formats would you like to consider any further for corresponding network analysis tools?