Last Tab Switcher wót Ark Knight

Sometimes you might have your browser setup to cycle through tabs in sequential order rather than by recently used order. But having a button to switch to last open tab is always handy.

This addion will allow you to jump to your last visible tab (even if its a separate window) easily with Alt + Z.

I created this addon because the ones currently available either didn't work or required tabs permission for absolutely no reason. This addon doesn't require any additional permission.

I know what I am going to use. :P Kept it small, and without any extra bloat!