BREAKING CHANGE: the integrations alakazam shipped as combine.yml are gone from the repository. Copy examples/config-sets-combine.yml into the root path to keep them, where they can be pinned and adjusted along with the versions. An integration is now a config-set carrying 'apply-when', which names the apps whose presence makes it apply. Naming the condition rather than deriving it from the configured apps is what lets a set configure only one side, as four of the seventeen pairs in combine.yml did.