• fix issue in udp_socket with unusual socket failure
• split progress_notification alert category into file-, piece- and block progress
• utp close-reason fix
• exposed default add_torrent_params flags to python bindings
• fix redundant flushes of partfile metadata
• add option to ignore min-interval from trackers on force-reannounce
• raise default setting for active_limit
• fall back to copy+remove if rename_file fails
• improve handling of filesystems not supporting fallocate()
• force-proxy no longer disables DHT
• improve connect-boost feature, to make new torrents quickly connect peers