.ariaDisabled(true) not affecting tabindex

[MalifaciousGames]

Is your feature request related to a problem?

Using .ariaDisabled(true) on an interactive element doesn't remove it from tab selection as it retains its tabindex='0' property.

Describe the solution you'd like.

Making disabled elements tabindex='-1' would be in line with the hover effect signifying they cannot be selected/interacted with.

[tmedwards]

Yeah. It should probably be doing that.

[tmedwards]

This is resolved, so closing the issue is okay. 👍🏻

For future reference, however, I generally close resolved issues myself either automatically by commit message or, failing that, manually.

In this case the resolves #219 bit in the titles would have triggered auto-closing upon the develop branch being merged into master.