This function is used instead of `Array#slice` to support node lists in IE < 9 and to ensure dense arrays are returned. This is also faster than native slice in some cases.

## Usage

```js
var slice = require('array-slice');
var arr = ['a', 'b', 'd', 'e', 'f', 'g', 'h', 'i', 'j'];

slice(arr, 3, 6);
//=> ['e', 'f', 'g']
```
