According to https://github.com/pimutils/vdirsyncer/releases there are new releases.
commit cd3616695c7b0a0097f7b609946b77aa40c209e7 Author: Amy Winston <amynka@gentoo.org> Date: Fri Nov 25 12:30:08 2016 +0100 dev-python/vdirsyncer: version bump 0.14.0 bug #595948