I like that and might use it for my markdown note-taking app.

However, it seems that there's an alignment issue between the axis' values and their points (or bars) on the graphs. The stacked bars total value is 95, yet it seems to go a bit over 100, and the problem is even more apparent on Line and Scatter plots. Nothing too major to fix I guess.

The non rounding on axis values (0, 20, 39.9, ... 99.8) is also a bit weird. Sorry I don't want to sound negative, I'm really interested and will keep an eye on it!