I built a compiler so I could stop writing custom element boilerplate

I've been building HTMLPlus Element on and off for a few years. It's at v4 now, 500+ commits, and I've never really shown it to anyone. So this is me finally doing that. The thing I got tired of Custom elements are a good idea. The browser gives you a component model that outlives whichever framework you happen to be using this year. What it does...