Cleaner Code: Using for...of Loops in JavaScript

You probably recognize this way of iterating in JavaScript

for (let i = 0; i < myArray.length; i++) {
// do something with myArray[i]
}

in ES6, there's a much cleaner way with for..of loops

for (item of myArray) {
    // do something with item

I think that looks a lot better! I changed several of my for loops to for...of loops in this commit.