I'm back on working on my triangles and I've good news! 🎉

I added some very basic keyboard support, so here's a video with a shitty example (using vello and parley for rendering).

This shows that windows can capture events, it's possible to update the model as they are processed and this re-triggers the rendering.

I have a few things to sort out, like version bumps, winit backend, docs and after this I'll publish it.

Today I added [vello](https://github.com/linebender/vello) to my example.

At start up, 2 windows are created: there are 2 renderers initialized: one renders a red triangle and one renders a blue triangle. Onto win1, the red-triangle renderer is called twice.

When the window is closed, 3 other renderers are initialized: one renders a green triangle, one renders a magenta triangle and the latest one uses vello to render a circle in gray background.