Announcing [com.vodori/missing "0.1.0"]. Missing is a utility library for Clojure intended to complement what’s already available in clojure.core. It includes additional transducers; <, >, <=, >= variants that work on comparables not just numbers; lazy merge sort; functions for indexing collections into maps; locking on values; topological sorts; and more. https://github.com/vodori/missing