Add touchpad edge drag support
A request for a feature that is present in the Synaptics driver. Touchpad edge drag is a pointer movement emulation caused when the finger reaches the edge of the touchpad while dragging. Reaching the edge and staying in the edge area causes the pointer to continue moving in that general direction. I believe this feature should be added as all other major operating systems (Windows, MacOS) and the SYnaptics driver seem to support this.