Huh, height and width are mixed up.

[possibly]

I was showing how Fixed2DArray worked to a friend, and while demoing a Fixed2DArray of size (2,3) a friend point out something so obvious I hadn't seen it before:

var fa = new FixedArray(2,3,0);
console.log(fa._grid);
/*
[
[0, 0, 0],
[0, 0, 0],
]
*/

"Uhm, thats a grid with width three and height 2."

I think she's right, and it's a really simple fix: swap this._height and this._width. A few other things will need adjustment, but I think this change makes more sense in the long run.

Thoughts?

[possibly]

See #8 for pr that fixes this.