Contains actions that can be performed on dockables.
Contains the action {@link com.javadocking.dockable.action.DockableStateAction} to change the state of a dockable.
Contains also a facory {@link com.javadocking.dockable.action.DockableStateActionFactory} to create dockable state actions, and a default implementation {@link com.javadocking.dockable.action.DefaultDockableStateActionFactory} for this interface.