drag_and_drop_lists

Scroll in the correct direction when text is rtl

• DragHandle moved to own widget. To create any drag handle, use the new properties listDragHandle and itemDragHandle in DragAndDropLists.
• Support null safety, see details on migration.

Fix for drag handles and null

Possibility to contain in ListView, bug fixes

added option to disable scrolling

disableScrolling while dragging bug fixed

Bug fix on disable scrolling for horizontal lists

Added listDividerOnLastChild to allow disabling last list divider

• Added onItemDraggingChanged and onListDraggingChanged parameters to DragAndDropLists. This allows certain use cases where it is useful to be notified when dragging starts and ends
• Refactored DragAndDropItemWrapper to accept a DragAndDropBuilderParameters instead of all the other parameters independently to allow for simpler and more consistent changes

• Always check mounted status when setting state

• Added constrainDraggingAxis parameter in DragAndDropLists. This is useful when setting custom drag targets outside of the DragAndDropLists.

• Added drag handle vertical alignment customization. See listDragHandleVerticalAlignment and itemDragHandleVerticalAlignment parameters in DragAndDropLists
• Added mouse cursor change on web when hovering on drag handle
• Fixed itemDecorationWhileDragging only applied when dragHandle is provided? (thanks kjmj)
• Fixed bug where setState() was called after dispose when dragging items in a long list (See issue Error in debug console when dragging item in long list, thanks mivoligo)
• Apply the itemDivider property to items in the DragAndDropListExpansion widget and use the lastItemTargetHeight instead of the constant value of 20 (thanks kjmj)

• Added disableTopAndBottomBorders parameter to DragAndDropListExpansion and ProgrammaticExpansionTile to allow for more styling options.

• Added function parameters for customizing the criteria for where an item or list can be dropped. See the parameters listOnWillAccept, listTargetOnWillAccept, itemOnWillAccept and itemTargetOnWillAccept in DragAndDropLists
• Added function parameters for directly accessing items or lists that have been dropped. See the parameters listOnAccept, listTargetOnAccept, itemOnAccept and itemTargetOnAccept in DragAndDropLists

• Fixed bug where auto scrolling could occur even when not dragging an item (thanks @ElenaKova)

• Added option for drag handles. See dragHandle and dragHandleOnLeft parameters in DragAndDropLists
• Added new example for drag handles
• Added option for item dividers. See the itemDivider parameter in DragAndDropLists
• Added option for inner list box decoration. See the listInnerDecoration parameter in DragAndDropLists
• Added option for decoration while dragging lists and items. See the itemDecorationWhileDragging and itemDecorationWhileDragging parameters in DragAndDropLists
• Removed unused itemDecoration parameter in DragAndDropLists
• Fixed unused itemDraggingWidth parameter in DragAndDropLists
• Configurable bottom padding for list and items. See the lastItemTargetHeight, addLastItemTargetHeightToTop and lastListTargetSize parameters in DragAndDropLists
• Remove pubspec.lock (thanks @freitzzz)

• Added canDrag option for lists
• Interface Change: Any classes implementing DragAndDropListInterface need to add canDrag

• Fixed wrong parameter order for onItemAdd (thanks @khauns)
• ProgrammaticExpansionTile: include option for isThreeLine of ListTile
• ProgrammaticExpansionTile: Remove required annotation for leading

• ProgrammaticExpansionTile: ensure that parent widget will always know its expanded/collapsed state

• Updated example project for web compatibility

• Formatted all with dartfmt

• Added API documentation

• Initial release