Draw2D touch version 2.10.0 released

+ draw2d.layout.connection.JunctionRouter for manual modification of connections.
+ add asynchron callback for connection creation
+ move "setAlpha" during the drag&drop operation into a edit policy instead in the Figure.js base class.
+ fixing bug for connection decoration. width/height as constructor param are ignored.
+ fixing bug for font fallback calculation in Label.setFontFamily
+ inherit the CSS class name of a Connection the the source and target decoration
+ fixing bug if the user release the mouse button outside the window during a drag&drop operation, The port location is broken at this moment.
+ move the serialization of the connection junction points into the router. In this case the router can decide which is important for deserialization.