Add ability to switch between tabs in MRU order

[ArbiterOfBuffoonery]

Currently the ability to switch between tabs is fixed to "move to the next right/left tab from current tab". It would be really awesome to have the ability to switch to the tab most recently used.

Example

There are 3 open tabs, tab1, tab2, and tab3. If I am currently on tab1 and select tab3 with the mouse, I would like to use ctrl+tab (or any other custom keyboard shortcut) to move back to tab1. If from tab 1 I select tab3, then after working, select tab2, when I press ctrl+tab multiple times the order would be tab3,tab1,tab2. Pressing a different combination (say ctrl+shift+tab) would move in the opposite direction.