Vue.js is a library for building web interfaces. Together with some other tools you can also call it a “framework”, although it’s more like a set of optional tools that work together really well. Now, if you’ve never heard of or used Vue before, you are probably thinking: great, yet another JavaScript framework! I get it. Turns out Vue isn’t particularly new — I first started working on its prototype almost two years ago, and the first public release was in February 2014. Over the time it has be...