copies a 2-dimensional vector (array)
npm install vec2-copy
A common function to copy values from one vec2 array to another.
This will eventually be replaced in a backward-compatible manner by require('gl-vec2/copy')
``js`
var tmp = [0, 0]
var other = [25, 25]
console.log( copy(tmp, other) )
//prints [25, 25]

#### copy(out, vec)
Copies the first two elements in vec to the first two elements in out, and returns out`.
MIT, see LICENSE.md for details.