2.12.1

• New docs, see http://backy2.com/docs/
• Added fuse mount with metadata information files
• Removed NBD Server
• Write support for fuse data (mount support directly from backup)
• Encryption
• Compression
• Encryption-version migration
• Re-keying
• Performance >350MB/s on recent CPUs with compression and encryption
• Recommendation NOT to use sqlite anymore
• Documentation update to reflect changes
• Better tag handling on backup, esp. on continue.
• Added minio s3 client library for better s3 performance than boto3
• Added "continue" feature both for backup and restore
• Show throughput in stats, not write performance.
• Improved performance on s3. However, boto3 seems to be the bottleneck
  here. We only get ~120MB/s to s3. Hints welcome.
• Upgrade to boto3
• Better stats
• Nicer output for restore
• Reducing memory on backup and restore at least by about -90%
• Rewrote backup function
• Backup is now skipping "preparing version" and thus WAY faster
• Backy2 can now handle ~1.5GB throughput w/ backups on my notebook
• Restore is way faster
• Deduplication on/off can now be toggled in cfg (if performance is more
  important than space).
• null data backend and null io for testing performance (you can now backup
  to a null target and restore from a null target).
• IO writer (for restore) is now multithreaded, therefore there's now
  simulatious_writes in the config for the IOs.
• Way better output during backup, restore and scrub, also throttleded to
  max 1/s, added ETA, added throughput and added the queuelengths for
  better understanding the bottlenecks.
• Using system rbd/rados python libs if available in the hope of better
  performance and compatibility.
• Added a warning when using the old backy2-builtin rbd and rados libs
• Nicer process notifications (top, ps)