Check out the fourth annual JetBrains report on the state of the developer ecosystem!  This year it includes more topics than ever before, as well as insights into the lives of developers. Along with the 15 languages and dozens of technologies we’ve covered before, this year we’ve added some new sections: R language, Microservices, Testing, Big Data, and even developer lifestyles! This time we adopted a new methodology that let us include far more responses than in previous years. This report is based on the opinion and experiences of almost 20,000 developers. Here are just a few of the