Pylogram lollypop

[jack]

Once I had the dry-run draw code, it was fairly easy to add actual drawing, to turn:

    from tkinter import *

    master = Tk()
    canvas = Canvas(master, width=300, height=300)
    canvas.pack()

    big_lollypop = Lollypop()
    big_lollypop.mid = Point(150,150)
    big_lollypop.height = 150
    big_lollypop.draw(canvas)

    mainloop()

into:
https://github.com/CartesianDaemon/pylogram/blob/master/lollypop.png