Nri.Ui.Accordion.V2
Changes from V1:
- Combine view and viewKeyed so that nodes are always keyed
- Removes viewCaret from the API -- it's possible to use the DisclosureIndicator directly
- Changed implementation to follow recommendations from https://www.w3.org/TR/wai-aria-practices-1.1/examples/accordion/accordion.html
- Adds Up and Down keyboard handling for navigating between the accordions
- Adds aria-expanded and aria-controls
- Changes accordion container to a section
- removes tablist/tab/tabpanel roles
- Adds heading levels for the accordion header (including style resets)