New features
- Use P_DATA_V2 for server->client packets too (better packet alignment)
- improve management interface documentation
- rework registry key handling for OpenVPN service, notably making most registry values optional, falling back to reasonable defaults
- accept IPv6 address for pushed "dhcp-option DNS ..." (make OpenVPN 2 option compatible with OpenVPN 3 iOS and Android clients)
Bug fixes
- Fix --tls-version-min and --tls-version-max for OpenSSL 1.1+
- reload HTTP proxy credentials when moving to the next connection profile
- Remove non-useful warning on pushed tun-ipv6 option.
- fix building with MSVC due to incompatible C constructs
- autoconf: Fix engine checks for openssl 1.1
- lz4: Rebase compat-lz4 against upstream v1.7.5
- lz4: Fix broken builds when pkg-config is not present but system library is
- Fix --bind ipv6only
- Allow learning iroutes with network made up of all 0s