Refs #14409

Docs: Use a 180x180 apple-touch-icon-precomposed.png.

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.

Allow npm package to be resolved via node module resolution

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.

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/assets/js/customize.min.js
	docs/assets/js/raw-files.min.js
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css

Added alias for euro -> eur

Move "Copy" button in `code`.

Revert "Scrollspy: ignore invisible list items"

Added link hover decoration variable