#203 Center the board inside its container

[Denis Jasselette]

Hi,

I think that the BoardView widget should be centered inside its container. I find it awkard that it resizes but sticks to the top-left corner. I attach a patch (created from revision 1742) providing a solution for this, it might need to be improved to handle the MoveIndicator more cleanly though.

[Jens Nissen]

Fixed in svn#1750