• don't perform DNS lookups for the DHT bootstrap unless DHT is enabled
• fix issue where setting file/piece priority would stop checking
• expose post_dht_stats() to python binding
• fix backwards compatibility to downloads without partfiles
• improve part-file related error messages
• fix reporting &redundant= in tracker announces
• fix tie-break in duplicate peer connection disconnect logic
• fix issue with SSL tracker connections left in CLOSE_WAIT state
• defer truncating existing files until the first time we write to them
• fix issue when receiving a torrent with 0-sized padfiles as magnet link
• fix issue resuming 1.0.x downloads with a file priority 0
• fix torrent_status::next_announce
• fix pad-file scalability issue
• made coalesce_reads/coalesce_writes settings take effect on linux and windows
• use unique peer_ids per connection
• fix iOS build on recent SDK
• fix tracker connection bind issue for IPv6 trackers
• fix error handling of some merkle torrents
• fix error handling of unsupported hard-links