v5.0.0

The DOM structure changed a bit:

BEFORE:

itemsContainer existed in the DOM only when items existed.

AFTER:

Now, itemsContainer always exists in the DOM.
This is useful when the itemsContainer has a scroll bar, and you want to bind certain events to it.

Consequently, theme.sectionItemsContainer was removed in favor of the new theme.itemsList.

Fixed focused item visibility when multiSection={true}.

Added aria-haspopup attribute to the input.