Plot area does not take big marker sizes into account

[fnorf]

I made some circles:

import numpy
import toyplot
x = [1, 2]
y = [1, 2]
size = [10, 25]

canvas = toyplot.Canvas()
axes = canvas.cartesian()
mark = axes.scatterplot(x, y, size=size)

Seeing the gorgeous examples I somehow expected Toyplot to make sure the charts would always look fancy so I expected the chart area to grow accordingly to the markers.

Instead I got a marker (top right) that is cut off:

This is nothing important, probably by design but I wanted to express my surprise. :)