PG0 - run a postgresql server directly from pg_probackup without restore

Early alpha
PG0 emulates PGDATA directory using FUSE
root is not needed for mount. You can separate db admin and unix admin roles
PG never writes to backup

Benefits

No additional space is required to peek into your data

Current limitations

Full backups only. Delta backups are not supported yet
Compression is not supported
Single threaded FUSE