Changes from WAI-ARIA 1.0 to 1.1

[chharvey]

A list of changes to the new WAI-ARIA 1.1 spec, including:

• [ ] role="none" — remove native role semantics ("presentation" is a synonym)
• [ ] role="switch" — like checkbox, but with on/off values
• [ ] aria-details — extended description not offerable by aria-describedby
• [ ] aria-current — current item (page, step, date) in a list
• [ ] aria-posinset — position in a list, when not accurately represented by DOM
• [ ] aria-setsize — list size, when not accurately represented by DOM

[Malvoz]

As noted in issue 4083, WAI-ARIA on caniuse does not map support for individual roles/properties/states. However, most of these features are supported in popular web browsers and screen readers.