The Swap Button v1.1.1

Changelog:

• Small optimization of selected object cleanup code.

The Swap Button v1.1.0

Changelog:

• Added a button to select one or move objecs.
  
• Added a button to clear all selected objects.
  
• If there is objects selected, one of them will be taken instead of a random object when swapping an object.
  
• If there is objects selected, one of them will be taken instead of the target object when yourself.
  
• Objects from the swap list are taken in order of addition to the list, then cycle.