FlowChart.NET version 6.1.2 adds several customer-requested features and bug fixes:

Resize multiple nodes
Now it is possible to resize multiple selected nodes simultaneously. To enable that, set the AllowMultipleResize property to true. When enabled, dragging a corner or side adjustment handle of any node resizes all nodes in the selection. The operation will be cancelled for all nodes if any of them does not accept its new size, e.g. if it's smaller than MinimumNodeSize value.

Visio2013Importer improvements
~ The Item argument of ImportItem event handlers is now pre-set to a DiagramItem instance created for the imported Visio shape, letting you avoid parsing some standard data such as Bounds or Text. You can either modify this item's properties, or replace it with a new instance of a different type.
~ Fixed a crash when a shape master does not have a name attribute (this happens with custom stencils)
~ Fixed a crash when theme1.xml is missing from the imported vsdx archive (this happens with files converted from old Visio versions to 2013 format)
~ Fixed a parse exception for some non-English locales.
~ Fixed a bug where one-segment connectors were imported at wrong positions.

Miscellaneous
~ LinkLabels are now copied by DiagramLink copy constructor and clipboard methods.
~ Fixed LinkLabel positioning along Bezier links.
~ DiagramView.ZoomFactor setter no longer automatically aligns its value to ZoomControl zoom steps. This avoids imprecise ZoomToFit results.

API changes
~ The SelectionMoved event has been renamed to SelectionModified, and is also raised if nodes are resized when AllowMultipleResize is enabled. Event handlers now receive SelectionEventArgs parameter instead of EventArgs.
~ The SelectionMoving event has been renamed to SelectionModifying, and is also raised if nodes are resized when AllowMultipleResize is enabled. Event handlers now receive SelectionValidationEventArgs parameter instead of ValidationEventArgs.

If anyone is interested in trying the beta version, please download this archive containing the updated control assemblies:
https://mindfusion.eu/_beta/fcnet612.zip

Any comments, questions and general feedback are welcome.