I'm so excited to finally have disjoint captures in closures; many papercuts on that one when I worked heavily with Amethyst a while back as there were a few cl

I'm so excited to finally have disjoint captures in closures; many papercuts on that one when I worked heavily with Amethyst a while back as there were a few closure-based APIs. Thanks to all the contributors for getting us to the 2021 edition!