- update to 1.2.9
* Fix #20: Set the :func:warnings.warn stacklevel to 2 if
the Python implementation is PyPy
* Fix packit configuration: use dist-git-branch: fedora-all
* Change the Tox configuration to run tests on PyPy v2.7 and 3.6.
* Fix #15: The @deprecated decorator doesn't set a warning
filter if the action keyword argument is not provided or None.
* Fix #13: Warning displays the correct filename and line
number when decorating a class if wrapt does not have the compiled c
extension.