WIP: Nix the snabbdom bundle
I built a nix expression to bundle snabbdom.
I marked this as WIP because I didn't update the README and because below.
It's worth noting that the bundle produced is slightly different than the one that's currently committed. I'm also using the master branch of my nixed snabbdom fork. If you want, I can change it to use
v2.1.0. Because of these two things, I haven't yet changed the current bundle to the one produced by the nix expression, which should be done before this is merged.