nit: you know what my motto is about selectors :)
Also h1[id="XXX"] is redundant since you can use use #current-month-year.

We had some tooling in the last framework that would let you do something like:

```js
var app.element('currentMonthYear'); // with some mapping to the selector

Since everything is sync now we could use getters instead like in gaia:

app.currentMonthYear;
```