v4.0.0

• Validate before confirm
• Auto search on type
• Accent marks handler on search
• Highlight search result
• New Chips tile widget
• Horizotal or vertical choice list scroll direction
• Use StatefulWidget instead of Provider as state management
• Configuration supports copyWith and merge
• Easy shortcut to define configuration
• Simplify class name and enum
• Removed sticky_headers package, provide simple API to easy implement sticky header
• Choice text and group header text highlight on filter
• Customizable choice layout and scroll direction
• Customizable every part on modal widget (header, footer, searchbar, confirm button, searchbar toggle)
• Choice select all/none, and provide an easy way to programmatic select
• New Modal barrier color and dissmisible configuration
• And many more useful configuration, please see the API documentation