# Svelte changelog ## 1.39.2 * Escape CSS in shadow DOM ([#840](https://github.com/sveltejs/svelte/issues/840)) * Fix missing anchor bug inside SVG elements ([#843](https://github.com/sveltejs/svelte/issues/843)) ## 1.39.1 * Always use anchors for slotted content ([#822](https://github.com/sveltejs/svelte/issues/822)) * Prevent ES6 in helpers ([#838](https://github.com/sveltejs/svelte/issues/838)) * Correctly determine whether to use `timeRangesToArray` ([#837](https://github.com/sveltejs/svelte/pull/837)) ## 1.39.0 * Always attach fragment to shadow root ([#821](https://github.com/sveltejs/svelte/issues/821)) * Add `buffered`, `seekable`, `played` bindings to media elements ([#819](https://github.com/sveltejs/svelte/pull/819)) * Quote `class` properties in legacy mode ([#830](https://github.com/sveltejs/svelte/issues/830)) * Warn on missing `lang` attribute on `` ([#828](https://github.com/sveltejs/svelte/pull/828)) ## 1.38.0 * Compile-time a11y warnings ([#815](https://github.com/sveltejs/svelte/pull/815)) * Remove redundant input blowback guards ([#645](https://github.com/sveltejs/svelte/issues/645)) * Use component name in debugging messages ([#781](https://github.com/sveltejs/svelte/issues/781)) ## 1.37.0 * Experimental support for compiling to custom elements ([#797](https://github.com/sveltejs/svelte/issues/797)) ## 1.36.0 * Optimize `style` attributes where possible ([#455](https://github.com/sveltejs/svelte/issues/455)) ## 1.35.0 * `set` and `get` continue to work until `destroy` is complete ([#788](https://github.com/sveltejs/svelte/issues/788)) * Observers of unchanged bound values don't fire incorrectly ([#804](https://github.com/sveltejs/svelte/issues/804)) * Nested components with slotted content render correctly in SSR mode ([#801](https://github.com/sveltejs/svelte/issues/801)) * More efficient rendering of raw and slotted content ([#637](https://github.com/sveltejs/svelte/issues/637)) * Handle unquoted attributes in attribute selectors ([#798](https://github.com/sveltejs/svelte/issues/798)) ## 1.34.0 * Support nested `` elements ([#790](https://github.com/sveltejs/svelte/issues/790)) * Attach `options` to instance ([#550](https://github.com/sveltejs/svelte/issues/550), [#777](https://github.com/sveltejs/svelte/issues/777)) * Error if transitions are applied to component ([#791](https://github.com/sveltejs/svelte/issues/791)) * Handle CSS variables in `