* Check whether `parentNode` exists before removing child ([#6037](https://github.com/sveltejs/svelte/issues/6037))
* Upgrade various dependencies, notably `css-tree` to `2.2.1` ([#7572](https://github.com/sveltejs/svelte/pull/7572), [#7982](https://github.com/sveltejs/svelte/pull/7982))
* Extend `css` compiler option with `'external' | 'injected' | 'none'` settings and deprecate old `true | false` values ([#7914](https://github.com/sveltejs/svelte/pull/7914))