Added

• Custom TextField builder via the builder property, replacing TextFieldConfiguration.
• decorationBuilder property for customizing SuggestionsBox decoration.
• Suggestions state (items, loading, error) in SuggestionsController.
• Streams in SuggestionsController for notification of selected suggestions.

Changed

• Renamed SuggestionsBoxController to SuggestionsController.
• Renamed layoutArchitecture to listBuilder.
• Renamed noItemsFoundBuilder to emptyBuilder.
• Renamed onSuggestionSelected to onSelected.
• Renamed suggestionsBoxVerticalOffset to offset, now including horizontal offset.
• Renamed hideSuggestionsOnKeyboardHide to hideWithKeyboard.
• Renamed keepSuggestionsOnSuggestionSelected to hideOnSelect and inverted its functionality.
• Renamed keepSuggestionsOnLoading to retainOnLoading.

Removed

• SuggestionsBoxDecoration, replaced by decorationBuilder.
• TextFieldConfiguration, replaced by custom TextField builder.
• CupertinoSuggestionsBoxController in favor of SuggestionsController.
• TypeAheadFormFiled, replaced by custom TextField builder.
• intercepting parameter (now always true).
• onSuggestionsBoxToggle parameter (replaced with subscriptions to SuggestionsController).
• ignoreAccessibleNavigation parameter (no longer required with new Overlay code).
• animationStart parameter (use animation mapping).
• minCharsForSuggestions parameter (implement in client code).
• autoFlipListDirection parameter (use listBuilder).