Transaction: method to convert timestamps to Time
Transaction confirmations: add decrement and increment
Storage migration: configure snapshot limits for VPS datasets
Transaction Storage::DestroyBranch
Transaction Storage::DestroySnapshot
Chain transfer: specify select() in query
Implement snapshot rotation
Rollback chain: fix SnapshotInPool presence
Backup chain: rotate both source and destination
Module Confirmable with helper methods, confirmed is an enum
Chain rotate: fix snapshot destroyal
Chain rotate: fix sql query for backup pool rotation