@japplegame Interesting! I wrote a library a while back to build and work with Priority Queues called prioqueue, which abstracts away the implementation details of how this queue is maintained, and lets you plug in your own. I think making an AVLTree implementation would be a great idea! When will you upload AVLTree to Hex.PM? 
@ndac_todoroki Glad to be able to help. I guess the Orderable protocol could be wrapped in a library, since I think it is rather common to want to do this kind of stuff. We might even provide built-in implementations for common ordered enumerables that call Orderable.orderable for all their contained elements… Let me conjure up something! 
