docking 0.6.0

Flutter layout for placing widgets in docking areas and arrange them into split and tabbed views.

[0.6.0]

• Feature to keep the state alive.
• DockingButtonsBuilder typedef

[0.5.0]

• Dynamic value in DockingItem
• Non-Closable DockingItem
• DockingItem
  • selection listener
  • close listener
  • close interceptor
  • buttons

[0.4.0]

• Method to add item
• Keep the row and column children's weight, and the selected tab's index after rearranging the layout

[0.3.0]

• Method to remove item

[0.2.0]

• Drag and Drop

[0.1.0]

• Docking layout
  • Docking areas
• Initial version of drag and drop areas

[0.0.1]

• Package creation