[x] rework parameter names [x] plotting different shapes [x] squares, rectangles, circles and other polygonal shapes [x] vignettes and a site with pagedown [x] text -- should be enabled by default, add examples in vignette [x] bitmap images [ ] vector images [ ] other symbols -- should be supported by text? [x] more complex waffles? [ ] legend, title annotation? [ ] aspect ration != 1?