I was talking to Dan Smith today about a patch series I was starting to work on. These changes affect people doing continuous deployment, so we came up with the idea of tagging the commits with "UpgradeImpact", similar to how we use DocImpact for changes that affect docs. This seems like a good convention to start using for all changes that affect upgrades in some way. Any comments/suggestions/objections? If not, I'll get this documented on: https://wiki.openstack.org/wiki/GitCommitMessages#Including_external_references -- Russell Bryant