Feature request: make a library interface.

[ethercrow]

This way haskell applications with interactive text interface can just reuse selecth and not reinvent something like this: https://github.com/yi-editor/yi/blob/master/yi/src/library/Yi/Completion.hs

[cgag]

The scoring code is all pure and in its own module so this should be easy, I'll figure out the proper way to do it soon soon. I'll also to see if there's anything I can learn from Yi's algorithms, thanks.