Remove: duration_field.install

That'd certainly be nice. I guess we're saying you can't upgrade from 8.x-1.x straight to 3.0.x. But that's true, anyway, since the 8.x-1.x branch only supported D8 core, and there's no way to get a site like that directly onto 3.0.x. Folks would have to go through 8.x-2.x for "bridge releases", anyway.

So in principle, +1.

However, the MR pipeline is failing. Haven't looked into why. NW for that.

Thanks,
-Derek