Upgrade to Scalaz 7.10 and all that entains

Started upgrading Mundane and hit this. There are two changes I made that I think are _wrong_ and would appreciate feedback on - I'll leave comments on the specific lines.

/cc @etorreborre @markhibberd 
I cannot seem to find a function :: `F[Free[F, A]] => Free[F, A]` but there is `liftF` and `Free#suspend` that are close. I think this might be an issue.