* Fixed DraggingTool.doMouseMove to respect settings of
Diagram.currentCursor in GraphObject.mouseDragEnter event handlers.
* Adding or removing reflexive links at a node when there are multiple
such links at that node no longer cause their routes to be invalidated
if Link.adjusting is not Link.None.
* The default text editor's main element no longer erases all CSS
Styling on activation. This allows you to set style by writing, for
example:
TextEditingTool.defaultTextEditor.mainElement.style.backgroundColor =
'red';