Trunk freeze

[Aleksey Bragin]

Hello,
0.3.12 was branched today, so I removed the lock from trunk. However,  
I want to really ask everyone not to jump into modern fancy features  
but pay more attention to fixing core parts of the system.

Victor is doing the change log draft, and if Colin has time I would  
like to ask him to apply our usual release stuff.

WBR,
Aleksey Bragin.