angular-ui/bootstrap — pull request #2403 by Merec (2014-06-28 13:35:55+00:00)
Title: Tabs: Use fade animation on tab contents

Adds fade="true" to tabset.

```html

First Faded Content!

Second Faded Content!

```

Requires ngAnimate and additional CSS:
```css
.tab-content > .tab-pane.fade.in-add {
display: block;
opacity: 0;
}
.tab-content > .tab-pane.fade.in-add.in-add-active {
opacity: 1;
}
```