We want the lookup to yield a result when there's only a single validator; and no title is provided. So that users can simply do 'aiken address' in their project if it's unambiguous. The validator's name is only required to disambiguate between multiple validators. I also noticed that the order of arguments in with_validator was wrong. Somehow.
Project
This crate encapsulates the code used to manage Aiken projects. See crates/cli for usage.