CoffeeScript upgrade refocuses on JavaScript standards

CoffeeScript, which attempts to make it easier to program in JavaScript, has a just-released beta version that features ECMAScript 2015+ support. The currently downloadable 2.0 beta offers ES2015+ syntax, where ES2015+ is recognized as ECMAScript 2015 and later features. ECMAScript is the official specification underlying JavaScript. The upgrade breaks compatibility with certain CoffeeScript 1 features to conform…