Change expansion icon when item expands/contracts

Author: luckyrat

lib/src/tree_node.dart

@@ -134,7 +134,7 @@ class _TreeNodeState<T> extends State<TreeNode<T>>
             onTap: () => _handleExpand(),
             child: _TreeNodeExpander(
               speed: _controller.duration!,
-              expanded: widget.node.expanded,
+              expanded: _isExpanded,
               themeData: _theme.expanderTheme,
             ),
           )

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_treeview
 description: A tree widget for Flutter that can be used to display nested, hierarchical data. It includes a number of features like styling labels, icons, and import and export utilities.
-version: 1.0.3+16
+version: 1.1.0
 homepage: https://bitbucket.org/kevinandre/flutter_treeview/src/master/
 repository: https://bitbucket.org/kevinandre/flutter_treeview/src/master/
 issue_tracker: https://bitbucket.org/kevinandre/flutter_treeview/issues