Update upstream source from tag 'upstream/2.0.15'
authorBoyuan Yang <byang@debian.org>
Sun, 14 Jul 2019 19:59:31 +0000 (15:59 -0400)
committerBoyuan Yang <byang@debian.org>
Sun, 14 Jul 2019 19:59:31 +0000 (15:59 -0400)
Update to upstream version '2.0.15'
with Debian dir 484802be9f46659130b7f96e281e5dbac6fd1c41


Trivial merge