Use Super- and/or Shiftkey in shortcut

Thanks for this nice functionality. The touchpad enabled is a big pain in my a** sometimes. Big thanks!

As a user I can define a shortcut with a letter in combination of the Ctrl- and/or Altkey. I would like to able to define a shortcut combination with the Super- and Shiftkey. Most Ctrl/Alt combination I use for inside applications. The functionality of touchpad-indicator is more OS/Windowsmanager related to me.

It would be great when I can define a shortcut with the Superkey.

Again thanks and keep up the good work!