:)

---

## Notes

H2's support these:

    {: .-two-column}
    {: .-three-column}
    {: .-left-reference}

H3's support these:

    {: .-prime}

Tables support these:

    {: .-shortcuts}

Pre's support these:

    {: .-setup}

Each sheet supports these metadata:

```yml
title: React.js
category: React
layout: 2017/sheet   # 'default' | '2017/sheet'
ads: true            # Add this for ads
---
```