There aren't really any assets though. I just create the svgs dynamically. Maybe I need to place some strategic `Math.round` calls here and there, never thought of this =).
Didn't get a chance to look at your source.
My svg handling was very much "learn as I go". An earlier version even had circles instead of hexagons because they're simpler to do. There's a cool playthrough video of that version: https://www.youtube.com/watch?v=vlpPr485NUY