Preparing for Melodic sync 2018-12-18

Melodic Maintainers,
Currently Melodic has no regressions and 197 packages ready to sync. I plan to hold new releases for Melodic starting Wednesday, December 19, with a sync late next week. Moveit has a couple known outstanding regressions, so we’ll still allow PRs from Moveit during the freeze.

Please reply here if there are any other outstanding issues I should know about before performing the sync.

The sync is out