popper 1.1.0

Floating UI and Popper-style positioning for Dart web apps, with middleware, auto update, portals, and anchored overlays.

1.1.0

• Added arrowWriteMode with full, crossAxisOnly, and none to control how arrow inline styles are written.
• Added PopperController.applyPopperLayout(...) to separate layout computation from DOM application.
• Added anchorRectBuilder to stabilize or override reference measurement.
• Added layoutWriter and arrowLayoutWriter so consumers can replace the default layout writing policy.
• Added PopperOptions.copyWith(...) for easier option composition.

1.0.0

• Initial version.