change move*To commands to use points

[ianstormtaylor]

Do you want to request a feature or report a bug?

Debt / improvement.

What's the current behavior?

Right now we have move*To commands like moveAnchorTo:

editor.moveAnchorTo([0, 2], 27)

They take a (path, offset) signature. But they only do that because they were made before Point was introduced. Instead, once we've removed keys, they should take (point):

editor.moveAnchorTo(point)

And if you want to specify an offset by hand you can just do:

editor.moveAnchorTo({ path: point.path, offset: 42 })

Or even:

editor.moveAnchorTo({ ...point, offset: 42 })

[ianstormtaylor]

Fixed by #3093.