Merge sequential pending change highlights

[pokey]

There are a couple commands where the pending change highlights appear in sequence. This slows down the action and makes it so that sometimes the cursorless decorations will move before another command can be executed. We'd like to make these commands show the highlights at the same time. The commands are:

• use
• carve

[AndreasArvidsson]

Could you expand on how you want the move/bring/swap decorations to function? Today the decorations do the following:

1. Decorate targets
2. Perform action/swap
3. Decorate result/that mark

We could just remove step 3?

[pokey]

I think this one was basically solved by reducing highlight time. The issue was if you say "carve air take bat" in one command, the "bat" highlight would have changed because redecoration debounce was too short relative to highlight timeout. I don't think that's an issue anymore but prob worth retesting just to be sure.

[AndreasArvidsson]

Okay but for cut it's already fixed anyways :)
#141