Zooming should complete drag or refresh the toolbar.
Prevent resizing degraded.
Typo on name method setVertex.
Move single multipoints as the points.

and:
* Move not single multipoints always with virtual vertex.
* Set default virtual vertex style for multipoint as transparent.
Use multipoints in example ModifyFeature-tools.html
Never uses the layer styleMap.

NOTE: Ignores OL options: `vertexRenderIntent` and `virtualStyle`.
Move DEFORM before RESIZE.

It's better than DEFORM is away from from the vertical of
center of the feature: better accuracy in displacement.
Update README.md and CHANGELOG.md