header

## Core plugins

The core plugins are tested here.

### `toggleClass`

Toggling the class means adding or removing it. Click the button to toggle class on (it will highlight the button). Click it again to toggle class off (it will remove highlighting).
Click me! Click me!

### `addClass`

Click the button to add class on (it will highlight the button).
Click me! Click me!

### `removeClass`

Click the button to remove class from it (it will remove highlighting).
Click me! Click me!