We are using the trie implementation in this repo for a non-ethereum use case, and it would be very helpful to us to be able to iterate over a sub-trie, rather than the entirety of the trie. Are there any plans to implement this functionality? It seems like something that could be more broadly useful for this data structure.

Perhaps the existing NodeIterator could be modified to stop when it gets back to the start node. That was the behavior I expected when I started investigating this problem.