stop using rewrite-clj internals unnecessarily (#83)
stop using rewrite-clj internals unnecessarily (#83)

In rewrite-clj v1, it is no longer necessary to use the internal
rewrite-clj.zip.base namespace.

The fns that MrAnderson is using from this namespace are all available
from the public rewrite-clj.zip namespace.

MrAnderson also uses rewrite-clj.reader which is currently considered
internal. But its usage seems like a reasonable way to minimize
rewrite-clj parsing to the first ns form it can find.

Closes #81
benedekfazekas/mranderson,benedekfazekas/mranderson