Release - v1.12.0

Just one main change for this release. I added a new command called AddAll (aa [keep])

The Add All Command [aa]

• aa: Remove all items on the stack, add them together, and return the result back to the stack
• aa keep: Add all items on the stack, but do not remove them. Simply add the total onto the top of the stack

There were a few very minor changes to the help and the code.