Cannot be done in Ecto schemas because only one type is allowed in arrays, and
needs to be done before the MRFs.

grep -rl '# Copyright © .* Pleroma' * | xargs sed -i 's;Copyright © .* Pleroma .*;Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>;'

Speeds up the test and makes it possible to run async.

Bugfix: MRF and Pipeline Ingestion

See merge request pleroma/secteam/pleroma!15

This is to run things like streaming notifications out, which will
sometimes need data that is created by the transaction, but is
streamed out asynchronously.

Closes #1497

Both objects and create activities will now go through the common
pipeline and will be validated. Objects are now created as a side
effect of the Create activity, rolling back a transaction if it's
not possible to insert the object.