{{alias}}( arr[, options] )
    Flattens an array.

    Parameters
    ----------
    arr: Array
        Input array.

    options: Object (optional)
        Options.

    options.depth: integer (optional)
        Maximum depth to flatten.

    options.copy: boolean (optional)
        Boolean indicating whether to deep copy array elements. Default: false.

    Returns
    -------
    out: Array
        Flattened array.

    Examples
    --------
    > var arr = [ 1, [ 2, [ 3, [ 4, [ 5 ], 6 ], 7 ], 8 ], 9 ];
    > var out = {{alias}}( arr )
    [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]

    // Set the maximum depth:
    > arr = [ 1, [ 2, [ 3, [ 4, [ 5 ], 6 ], 7 ], 8 ], 9 ];
    > out = {{alias}}( arr, { 'depth': 2 } )
    [ 1, 2, 3, [ 4, [ 5 ], 6 ], 7, 8, 9 ]
    > var bool = ( arr[ 1 ][ 1 ][ 1 ] === out[ 3 ] )
    true

    // Deep copy:
    > arr = [ 1, [ 2, [ 3, [ 4, [ 5 ], 6 ], 7 ], 8 ], 9 ];
    > out = {{alias}}( arr, { 'depth': 2, 'copy': true } )
    [ 1, 2, 3, [ 4, [ 5 ], 6 ], 7, 8, 9 ]
    > bool = ( arr[ 1 ][ 1 ][ 1 ] === out[ 3 ] )
    false


{{alias}}.factory( dims[, options] )
    Returns a function for flattening arrays having specified dimensions.

    The returned function does not validate that input arrays actually have the
    specified dimensions.

    Parameters
    ----------
    dims: Array<integer>
        Dimensions.

    options: Object (optional)
        Options.

    options.copy: boolean (optional)
        Boolean indicating whether to deep copy array elements. Default: false.

    Returns
    -------
    fcn: Function
        Flatten function.

    Examples
    --------
    > var flatten = {{alias}}.factory( [ 2, 2 ], {
    ...     'copy': false
    ... });
    > var out = flatten( [ [ 1, 2 ], [ 3, 4 ] ] )
    [ 1, 2, 3, 4 ]
    > out = flatten( [ [ 5, 6 ], [ 7, 8 ] ] )
    [ 5, 6, 7, 8 ]

    See Also
    --------