Update upstream source from tag 'upstream/2.4.0'
authorMo Zhou <cdluminate@gmail.com>
Thu, 16 May 2019 04:56:43 +0000 (04:56 +0000)
committerMo Zhou <cdluminate@gmail.com>
Thu, 16 May 2019 04:56:43 +0000 (04:56 +0000)
Update to upstream version '2.4.0'
with Debian dir 1f98bdb8b5c4dc3844288ab4a1fa7afd9b75dac4


Trivial merge