Fixes #14851

This would only work with transitions but since we disable them for unit tests, this delivers unreliably results.

Fixes #14375.
Closes #14519 by merging it.

Fixes #14167.
Closes #14189 by merging it.

Closes #13563 by merging it.

Added support for `aria-expanded` toggling via JavaScript. Added
`aria-controls`, `aria-expanded`, `aria-labelledby` to tabs docs.

Added `aria-expanded` unit test for the tabs plugin.

See also #13554.

Closes #14154 by merging it.

Closes #14772.

Fixes #14756.
Closes #14767.

also includes tiny fix/clarification to two existing unit tests for the
.active class, adding data-toggle=“button” explicitly to the tested
buttons

Closes #14819.

Fixes #14844.
Closes #14845.

Closes #14726.

Also adds unit tests for keyboard events.

Fixes #14468.

Fixes #14561. Big thanks to @wickstargazer.

[skip validator]

Fixes #14553.

Fixes #11967.

...by hiding passing tests in the list of tests.

Fixes #14322.
Closes #14581.

Fixes #14274.
Fixes #14632.

Leaking tooltips across tests leads to confusion and sadness.

Fixes #13696.
Fixes #13696.
Fixes #14197.
Closes #13718.

Fixes #13031.

Fixes #14483

Fixes #12815.
Closes #14363.

Added handling of aria-expanded=true/false to collapse.js, updated
documentation to include advice on making expand/collapse controls
accessible, updated examples and javascript documentation to use
aria-expanded and aria-controls (when targetting single collapsible
element, using ID rather than class selector)

Closes #14147.
Closes #14153.

Fixes #13071