0.0.50

Added

• Add min/max limits to increment/decrement input buttons and disable at bounds

Fixed

• Fixed clip behavior in Dialog overlay widget
• Removed haptic on iOS

Breaking Changes

• [BREAKING] Navigation selection model changed from index-based (int) to
  key-based (Key?) across NavigationBar, NavigationRail, and
  NavigationSidebar (commits 53d2d8c, 8d3104a, 9ef28a8)
  • index parameter removed; use selectedKey instead
  • onSelected callback signature changed from ValueChanged<int>? to
    ValueChanged<Key?>?
  • NavigationItem.index parameter removed; use the widget's key for
    selection identity
• [BREAKING] NavigationBarItem abstract class removed; children parameters now
  accept List<Widget> instead of List<NavigationBarItem>
• [BREAKING] NavigationContainerMixin (and its wrapChildren method) removed
• [BREAKING] NavigationChildControlData and NavigationGroupControlData
  classes removed
• [BREAKING] NavigationBar.constraints parameter removed; use expandedSize
  and collapsedSize instead
• [BREAKING] Several NavigationBar parameters changed from nullable with theme
  fallback to non-nullable with explicit defaults:
  • alignment (NavigationBarAlignment? → NavigationBarAlignment, default:
    start)
  • labelType (NavigationLabelType? → NavigationLabelType, default: all)
  • labelPosition (NavigationLabelPosition? → NavigationLabelPosition,
    default: bottom)
  • labelSize (NavigationLabelSize? → NavigationLabelSize, default:
    small)
  • expanded (bool? → bool, default: false)
• [BREAKING] NavigationBar.expands parameter removed
• [BREAKING] NavigationGap, NavigationDivider, NavigationLabel, and
  NavigationWidget no longer implement NavigationBarItem

Migration guide:

1. Replace index / onSelected with selectedKey / key-based callback.

// before
NavigationBar(
  index: selectedIndex,
  onSelected: (index) => setState(() => selectedIndex = index),
  children: [
    NavigationItem(label: Text('Home'), child: Icon(Icons.home)),
    NavigationItem(label: Text('Search'), child: Icon(Icons.search)),
  ],
)

// after
NavigationBar(
  selectedKey: selectedKey,
  onSelected: (key) => setState(() => selectedKey = key),
  children: [
    NavigationItem(key: ValueKey('home'), label: Text('Home'), child: Icon(Icons.home)),
    NavigationItem(key: ValueKey('search'), label: Text('Search'), child: Icon(Icons.search)),
  ],
)

2. Remove any NavigationBarItem type annotations; use Widget instead.
3. Remove any usage of NavigationContainerMixin, NavigationChildControlData,
   or NavigationGroupControlData.
4. Replace NavigationBar(constraints: ...) with expandedSize /
   collapsedSize.