Contours width has no effect #502

using PlotlyJS
using WebIO

begin
	# Define grid
	x = range(-1, 1, length=100)
	y = range(-1, 1, length=100)
	z = [abs2(xi + 1im * yi) for yi in y, xi in x]  # note: Plotly expects z as rows = y, cols = x
end

# Create surface trace
trace = surface(
    x = x,
    y = y,
    z = z,
    showscale = false,
	contours = attr(
        z = attr(
            show = true,
            color = "white",
            width = 16,
        )
    )
)

savefig(
	plot(trace, Layout(scene = attr(xaxis = attr(visible=false),
                                yaxis = attr(visible=false),
                                zaxis = attr(visible=false)))),
		"test.png")