allow to easily switch to last used tool
Submitted by tom..@..ma.com
Link to original bug (#373060)
Description
When using two tools and swapping between them often, instead of having to press the other tool's key, there should be a "go to previous tool key" which swaps back to the last-used tool.
Other information: Corel apps have this feature, where it is loved! Photoshop doesn't have it!
Version: git master