Version 1.0.11 released.

• Fixed potential crash when the HUP signal is sent.
• Fixes handling of weighted Subnets in switch and hub modes, preventing unnecessary broadcasts.
• Works around a MinGW bug that caused packets to Windows nodes to always be sent via TCP.
• Improvements to the PMTU discovery code, especially on Windows.
• Use UDP again in certain cases where 1.0.10 was too conservative and fell back to TCP unnecessarily.
• Allow fast roaming of hosts to other nodes in a switched VPN.