All PlatformsAllow the RPC server to listen on an IPv6 address (#161)
Change TR_CURL_SSL_VERIFY to TR_CURL_SSL_NO_VERIFY and enable verification by default (#334)
Go back to using hash as base name for resume and torrent files (those stored in configuration directory) (#122)
Handle "fields" argument in "session-get" RPC request; if "fields" array is present in arguments, only return session fields specified; otherwise return all the fields as before
Limit the number of incorrect authentication attempts in embedded web server to 100 to prevent brute-force attacks (#371)
Set idle seed limit range to 1..40320 (4 weeks tops) in all clients (#212)
Add Peer ID for Xfplay, PicoTorrent, Free Download Manager, Folx, Baidu Netdisk torrent clients (#256, #285, #355, #363, #386)
Announce INT64_MAX as size left if the value is unknown (helps with e.g. Amazon S3 trackers) (#250)
Add TCP_FASTOPEN support (should result in slight speedup) (#184)
Improve ToS handling on IPv6 connections (#128, #341, #360, #692, #737)
Abort handshake if establishing DH shared secret fails (leads to crash) (#27)
Don't switch trackers while announcing (leads to crash) (#297)
Improve completion scripts execution and error handling; add support for .cmd and .bat files on Windows (#405)
Maintain a "session ID" file (in temporary directory) to better detect whether session is local or remote; return the ID as part of "session-get" response (TRAC-5348, #861)
Change torrent location even if no data move is needed (#35)
Support CIDR-notated blocklists (#230, #741)
Update the resume file before running scripts (#825)
Make multiscrape limits adaptive (#837)
Add labels support to libtransmission and transmission-remote (#822)
Parse session-id header case-insensitively (#765)
Sanitize suspicious path components instead of rejecting them (#62, #294)
Load CA certs from system store on Windows / OpenSSL (#446)
Add support for mbedtls (formely polarssl) and wolfssl (formely cyassl), LibreSSL (#115, #116, #284, #486, #524, #570)
Fix building against OpenSSL 1.1.0+ (#24)
Fix quota support for uClibc-ng 1.0.18+ and DragonFly BSD (#42, #58, #312)
Fix a number of memory leaks (magnet loading, session shutdown, bencoded data parsing) (#56)
Bump miniupnpc version to 2.0.20170509 (#347)
CMake-related improvements (Ninja generator, libappindicator, systemd, Solaris and macOS) (#72, #96, #117, #118, #133, #191)
Switch to submodules to manage (most of) third-party dependencies
Fail installation on Windows if UCRT is not installed
Полный список изменений 
