hgext3rd/__init__.py

tags: rename "head" to "node" where we don't care

Followup to 5eb4d206202b (tags: extract fnode retrieval into its own
function, 2017-03-28) in which the "for head in head" became "for head
in nodes".

# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)