accordion_sliver_app_bar

• Added safeArea parameter to AccordionSliverAppBar to control whether the safe area is added to the app bar.

• Updated README

• Moved demo gif file to example
• Bug fix

New Features and Enhancements

• Built-in safe area handling ensures consistent behavior across devices.
• Custom animation support via animatedBuilder in AccordionSliverChild allows for flexible child transitions.
• Added background and backgroundOverlayBuilder for enhanced visual customization.
• A widget cache improves performance by storing rendered widgets for different states.
• Introduced a new staticVanish factory method for AccordionSliverChild, enabling static children that vanish when collapsed.

Breaking Changes

• The constructor no longer accepts a delegate, requiring direct property updates.
• AccordionSliverChild now uses expandedHeight, collapsedHeight, and other new properties, necessitating updates to child definitions.
• Factory methods for AccordionSliverChild have new signatures, requiring adjustments in usage.

• Some bug fixes
• Added AccordionSliverChild.static to make an static child
• In AccordionSliverChild.vanish changed the name of child from expanded to child
• Added backgroundBuilder to AccordionSliverDelegate for background customization

• initial release.