Installation

go get bitbucket.org/ronb/ml

ml is a very simple tool that combines ln -s and mv:

$ touch from
$ ml from to
$ ls -la
total 8
drwxr-xr-x  2 r  staff  136 Jul 29 20:53 .
drwxr-xr-x  4 r  staff  306 Jul 29 20:52 ..
lrwxr-xr-x  1 r  staff    2 Jul 29 20:53 from -> to
-rw-r--r--  1 r  staff    0 Jul 29 20:53 to
$ ml -reverse from
to