Add the ability to associate an object to the match.

[Mistobaan]

it would be useful to associate an interface{} to the word, or return an index of the match.

[Yugloocamai]

Yes, this would be GREAT! I expected this actually, and just ran into a wall.

[Yugloocamai]

@Mistobaan I forked and added interface associations, might be helpful to you. https://github.com/Yugloocamai/closestmatch

[schollz]

@Yugloocamai I think I'd rather not modify this version, as it will break some things I've made that depend on it. Would you like to make a PR in this project's README to guide people to your project?