* merged lp:~mvo/unattended-upgrades/minimal-steps-upgrade - This allows performaing the upgrades in minimal chunks so that they can be interrupted (relatively) quickly with SIGUSR1 - This feature is not enabled by default yet, in order to use it, uncomment the line in 50unattended-upgrades: Unattended-Upgrades::MinimalSteps "true"; LP: #729214