Describe the general problem you have found here.

How to reproduce
----------------

 1. step 1
 2. step 2
 3. ...

Expected behavior
-----------------

Actual behavior
---------------

Environment
-----------

Please fill in the following information in bug reports, removing the
comments like this one in brackets. For feature request, just remove
this section.

 * Version: e.g. 0.10, output of \-\-version (without backslashes)
 * Operating system: Debian GNU/Linux 9.1 (stretch), Windows 7, Ubuntu Xenial, etc
 * Install method: distribution package, PyPI, from source tarball, from git, etc
 * URL: e.g. https://example.com/feed.rss
 * Minimal configuration file: output of `feed2exec ls`
