tests suite (for that, use tox).
* Use resource_filename() to locate the top mailman package.

owners as `IUser`s.  (Closes #135)

Add a doctest for the `owners` top-level resource.

Add a doctest for the `owners` top-level resource.

Add a doctest for the `owners` top-level resource.

Clean up branch to fix issue 145 (bulk emails not being decorated)

Clean up branch based on abompard's branch.

See merge request !44

Use Python 3.5's smtpd for earlier Python versions

 * For Python versions earlier than 3.5, use a compatibility layer for a
   backported smtpd module which can accept non-UTF-8 data.  (Closes #140)

See merge request !38

Resolve conflicts.