Version 1.1pre15 released.

• Detect when the machine is resuming from suspension or hibernation.
• When an old PID file is found, check whether the old daemon is still alive.
• Remember scope_id for IPv6 addresses when sending UDP packets to link-local addresses.
• Ensure compatibility with OpenSSL 1.1.
• Only log about dropped packets with debug level 5.
• Warn when trying to generate RSA keys less than 2048 bits.
• Use AES256 and SHA256 as the default encryption and digest algorithms.
• Add DeviceType = fd to support tinc on Android without requiring root.
• Support PriorityInheritance for IPv6 packets.
• Fixes for Solaris tun/tap support.
• Add a configurable expiration time for invitations.
• Store invitation data after a succesful join.
• Exit gracefully when the tun/tap device is in a bad state.
• Add the LogLevel option.
• AutoConnect now actively tries to heal split networks.

Thanks to Etienne Dechamps, Rafał Leśniak, Sean McVeigh, Vittorio Gambaletta, Dennis Lan, Pacien Tran-Girard, Roman Savelyev, lemoer and volth for their contributions to this version of tinc.