* Use an ActivityPub capability to better enable/disable ActivityPub support
* split PRs
* remove test hook
* do not run migrations for new installs
* fix unit tests
* fix unit tests
* remove abandoned schedule!
* fix migration class
* fix order
* restructuring
* remove follower migration
* do not yet remove legacy followers
* remove blog-user changes
* use a const for the version number
* add user tests and fix old ones
* use a more generic async migrator
* optimized test
