Michael Cohen/Getty Images Kotlin has become the fastest-growing programming language,according to GitHub, and it’s increasingly being used by companies like Google, Square, Pinterest, Pivotal, Capital One, and Atlassian. Kotlin was developed in 2010 by JetBrains, a software-tools company, to take away some of the "pain points" of Java, like "null pointer exceptions," which frequently cause Java apps to crash. Business Insider spoke […]