unfix

[pdelong42]

I have to decide what to do with the unfix dependency I've pulled-in. It's got some minor issues:

• In v1.0, the lein repl complains that rank is not dynamic, but expects it to be based on how it's named. It looks like this is fixed in v1.5, but the author hasn't pushed that to clojars yet (and probably never will - it's been fixed for over a year).
• I feel the equality / inequality operators should bind less tightly than addition, subtraction, multiplication, and division; but they don't

Because of these changes I'd like to make, I need to decide whether to submit a pull request when I fix them, or if I should keep it forked and push to clojars under a separate namespace (or both). I've never tried the latter, so it would be a useful learning experience.