Rotate180 = function (matrix)
{
    return RotateMatrix(matrix, 180);
}
Rotates the array matrix 180 degrees.

A matrix is a two-dimensional array (array of arrays), where all sub-arrays (rows)
have the same length. There must be at least two rows. This is an example matrix:

```
[
   [ 1, 1, 1, 1, 1, 1 ],
   [ 2, 0, 0, 0, 0, 4 ],
   [ 2, 0, 1, 2, 0, 4 ],
   [ 2, 0, 3, 4, 0, 4 ],
   [ 2, 0, 0, 0, 0, 4 ],
   [ 3, 3, 3, 3, 3, 3 ]
]
```

@function Phaser.Utils.Array.Matrix.Rotate180
@since 3.0.0

@generic T
@genericUse {T[][]} - [matrix,$return]

@param {T[][]} [matrix] - The array to rotate.

@return {T[][]} The rotated matrix array. The source matrix should be discard for the returned matrix.