Fix `up` dependency

Fixes #925 

I just found out (because of an error in openbadger) that `up` was unpublished and republished as `up-time` and that something completely different was published at `up`. So this fixes that. Needless to say, I'm *super* happy that happened and that they did that.

Also, `up-time` has been marked as deprecated so at some point we should just completely remove it as a dependency and figure out something else for code reloading.