Release v4.0.0

• Breaking Changes:
  • Removed Selection field from NodifyEditor
  • Removed InitialMousePosition, CurrentMousePosition, PreviousMousePosition fields from NodifyEditor
  • Removed ItemContainer.DraggableHost (use Editor.ItemsHost instead)
  • Made SelectionType required in SelectionHelper
  • Moved GroupingNode.SwitchMovementModeModifierKey to EditorGestures.GroupingNode
  • Pending connections are now restricted to connect only to Connectors or to NodifyEditors and ItemContainers if PendingConnection.AllowOnlyConnectors is false
• Features:
  • Added Connector.EnableStickyConnections to allow completing pending connections in two steps.
  • Added editor states which can be overriden by inheriting from NodifyEditor and implementing NodifyEditor.GetInitialState().
    • EditorState - base class for all editor states
    • EditorDefaultState
    • EditorSelectingState
    • EditorPanningState
  • Added container states which can be overriden by inheriting from ItemContainer and implementing ItemContainer.GetInitialState().
    • ContainerState - base class for all container states
    • ContainerDefaultState
    • ContainerDraggingState
  • Added MultiGesture utility that can combine multiple input gestures into one gesture
  • Added configurable input gestures for NodifyEditor, ItemContainer, Connector, BaseConnection and GroupingNode to EditorGestures.
  • Added State, PushState, PopState and PopAllStates to NodifyEditor and ItemContainer
  • Changed the default AutoPanSpeed to 15 from 10 pixels per tick.
  • Allow setting ItemContainer.IsPreviewingLocation from derived classes
• Bugfixes:
  • Fixed HandleRightClickAfterPanningThreshold not working as expected
  • Fixed DisablePanning not disabling auto panning in certain situations
  • Fixed GroupingNode selection not working with multiple selection modes
  • Fixed PendingConnection connecting cross editors