`rst-shift-region` now works like `indent-rigidly`. I.e. you can give
tree20b3b590cb1c0203396d8169e03a0efd97c841a8
drwxr-xr-x - docutils
drwxr-xr-x - prest
drwxr-xr-x - sandbox
drwxr-xr-x - web