Probably a stupid idea, and I can see it already being brought up several
times... but why not extend spread operators to work with numeric ranges?

let a = [ 0 ... 3 ];
// Expands to: [ 0, 1, 2, 3 ]

This wouldn't be a groundbreaking feature, but it would allow better
readability when plotting a range of values:

let esVersions = [ 1 ... 5, 2015 ];

It might also be used to extract a range of values:

array[ 3 ... 6 ] = "ABCDEFGH";
// [ "D", "E", "F", "G" ]

Which I find far more readable than this:

array[ , , , , 3, 4, 5, 6 ] = "ABCDEFGH";

Since it would require two numbers to be explicitly supplied on each side,
there's no risk of it being misinterpreted as an attempt to spread an
array. Decimal components would be dropped:

let a = [ 1 ... 3.9 ];
// [ 1, 2, 3 ]

This would complement Alican's suggested syntax for slicing an array of
values, which modifies the original array.

Thoughts? Just throwing crap out there.
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Probably a stupid idea, and I can see it already being brought up several
times... but why not extend spread operators to work with numeric ranges?

```js
	let a = [ 0 ... 3 ];
	// Expands to: [ 0, 1, 2, 3 ]
```

This wouldn't be a groundbreaking feature, but it would allow better
readability when plotting a range of values:

```js
	let esVersions = [ 1 ... 5, 2015 ];
```

It might also be used to extract a range of values:

```js
	array[ 3 ... 6 ] = "ABCDEFGH";
	// [ "D", "E", "F", "G" ]
```

Which I find far more readable than this:

```js
	array[ , , , , 3, 4, 5, 6 ] = "ABCDEFGH";
```

Since it would require two numbers to be explicitly supplied on each side,
there's no risk of it being misinterpreted as an attempt to spread an
array. Decimal components would be dropped:

```js
	let a = [ 1 ... 3.9 ];
	// [ 1, 2, 3 ]
```

This would complement Alican's suggested syntax for slicing an array of
values, which modifies the original array.

Thoughts? Just throwing crap out there.