Update upstream source from tag 'upstream/0.6.4'
authorgregor herrmann <gregoa@debian.org>
Fri, 8 Dec 2017 14:27:26 +0000 (15:27 +0100)
committergregor herrmann <gregoa@debian.org>
Fri, 8 Dec 2017 14:27:26 +0000 (15:27 +0100)
Update to upstream version '0.6.4'
with Debian dir c9c965f42e3ec896b78f0fd99b86f22cbf478452


Trivial merge