The concept of triple border was initially introduced to solve the
visibility problem occurring when the border's environment is similar to
the border itself. In practice however, it doesn't help much and has no
redeeming aesthetic value.
'focus_follows_mouse' is renamed to 'focus_follows_pointer'.
The aforementioned option is now handled by motion notify events.
sxhkd is now required to achieve window move/resize actions through
the new '*_pointer' messages as bspwm is not grabbing the pointer anymore.