templater: inline unwrapvalue()
The current unwrapvalue() will be superseded by _unwrapvalue().
Note that _unwrapvalue() can simply return thing.tovalue() if thing is a
wrapped object. That's because tovalue() is guaranteed to not return a
generator of strings.
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)