Changes for 2.3.2

• Fixed updating the cursor when dragging after possibly auto-scrolling.
• Fixed successive calls to Diagram.makeSvg creating potentially incomplete SVG.
• Fixed routing of particular Bezier links by LayeredDigraphLayout when using the new LayeredDigraphLayout.alignOption
• Setting Diagram.div to a DIV from null will no longer redo Diagram initialization if it had been set to a DIV previously.