What Development skills do you think you will you learn this year?

I'm going to be continuing to spend more time on learning R, (re) learning Python, and learning some more parts of the Python ecosystem like Numpy, Scipy, Pandas, Scikit-learn, etc. I'm also planning to spend some time on Prolog. And if there's time left over, I want to at least dabble in Scala a bit more and learn to use Figaro.

Really excited about learning Elixir+Phoenix, possibly React too.