WIP: backup, import/export
This branch introduces a portable file format based on tar streams for backing up the entirety of Pleroma instances to. The use of a portable, stable file format enables the ability to convert between different versions of Pleroma without having to worry about database structure. It also enables conversion to Pleroma from other software and vice versa.
This work could also be extended in the future to allow users to download a copy of their own personal data, as required by the GDPR and similar regulations elsewhere.
- reading backups