Switch "change" implementation to use `editNew`

[pokey]

Would need to tweak decoration code so that targets have more control over highlighting.

The main benefit is that we can then use "change type" with #1631, but it also makes things more consistent

[pokey]

See also #803

[AndreasArvidsson]

change after would this mean that this action could actually take a target or a destination descriptor? Because we don't want the users to have to say clear to air :D

[pokey]

Yeah you're right we should bail on that piece. If we really wanted to get serious about that one, we'd introduce a new action that accepts a destination. But I'm not sure I see the point of that

[pokey]

This one should be fairly straightforward once #1605 lands, keeping one thing in mind: we'll need to avoid the automatic line expansion that we get for "drink" and "pour". Can just set these in those derived classes rather than base class 🤷‍♂️

[AndreasArvidsson]

Yeah that's no problem at all. Just move it to the derived classes.