upstream tarball was generated from the git repo using:

(V=origin/stable; REV=$(git describe --tags $V | sed -e 's/^v//' -e 's/-alpha/~alpha/');
 git archive --prefix=tagua-$REV/  --format=tar $V | xz -9 > ../tagua_$REV.orig.tar.xz)

 -- Yann Dirson <dirson@debian.org>, Sat, 30 Sep 2017 23:21:19 +0200
