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docs: update changelog to follow changesets format (#8642)

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# Svelte changelog
## Unreleased (4.0)
* **breaking** Minimum supported Node version is now Node 16 ([#8566](https://github.com/sveltejs/svelte/pull/8566))
* **breaking** Minimum supported webpack version is now webpack 5 ([#8515](https://github.com/sveltejs/svelte/pull/8515))
* **breaking** Bundlers must specify the `browser` condition when building a frontend bundle for the browser ([#8516](https://github.com/sveltejs/svelte/pull/8516))
* **breaking** Minimum supported vite-plugin-svelte version is now 2.4.1. SvelteKit users can upgrade to 1.20.0 or newer to ensure a compatible version ([#8516](https://github.com/sveltejs/svelte/pull/8516))
* **breaking** Minimum supported TypeScript version is now TypeScript 5 (it will likely work with lower versions, but we make no guarantees about that) ([#8488](https://github.com/sveltejs/svelte/pull/8488))
* **breaking** Remove `svelte/register` hook, CJS runtime version and CJS compiler output ([#8613](https://github.com/sveltejs/svelte/pull/8613))
* **breaking** Stricter types for `createEventDispatcher` (see PR for migration instructions) ([#7224](https://github.com/sveltejs/svelte/pull/7224))
* **breaking** Stricter types for `Action` and `ActionReturn` (see PR for migration instructions) ([#7224](https://github.com/sveltejs/svelte/pull/7224))
* **breaking** Stricter types for `onMount` - now throws a type error when returning a function asynchronously to catch potential mistakes around callback functions (see PR for migration instructions) ([#8136](https://github.com/sveltejs/svelte/pull/8136))
* **breaking** Overhaul and drastically improve creating custom elements with Svelte (see PR for list of changes and migration instructions) ([#8457](https://github.com/sveltejs/svelte/pull/8457))
* **breaking** Deprecate `SvelteComponentTyped`, use `SvelteComponent` instead ([#8512](https://github.com/sveltejs/svelte/pull/8512))
* **breaking** Make transitions local by default to prevent confusion around page navigations ([#6686](https://github.com/sveltejs/svelte/issues/6686))
* **breaking** Error on falsy values instead of stores passed to `derived` ([#7947](https://github.com/sveltejs/svelte/pull/7947))
* **breaking** Custom store implementers now need to pass an `update` function additionally to the `set` function ([#6750](https://github.com/sveltejs/svelte/pull/6750))
* **breaking** Do not expose default slot bindings to named slots and vice versa ([#6049](https://github.com/sveltejs/svelte/pull/6049))
* **breaking** Change order in which preprocessors are applied ([#8618](https://github.com/sveltejs/svelte/pull/8618))
* **breaking** The runtime now makes use of `classList.toggle(name, boolean)` which does not work in very old browsers ([#8629](https://github.com/sveltejs/svelte/pull/8629))
* **breaking** apply `inert` to outroing elements ([#8627](https://github.com/sveltejs/svelte/pull/8627))
# svelte
## 4.0.0-next.0
### Major Changes
* breaking: Minimum supported Node version is now Node 16 ([#8566](https://github.com/sveltejs/svelte/pull/8566))
* breaking: Minimum supported webpack version is now webpack 5 ([#8515](https://github.com/sveltejs/svelte/pull/8515))
* breaking: Bundlers must specify the `browser` condition when building a frontend bundle for the browser ([#8516](https://github.com/sveltejs/svelte/pull/8516))
* breaking: Minimum supported vite-plugin-svelte version is now 2.4.1. SvelteKit users can upgrade to 1.20.0 or newer to ensure a compatible version ([#8516](https://github.com/sveltejs/svelte/pull/8516))
* breaking: Minimum supported TypeScript version is now TypeScript 5 (it will likely work with lower versions, but we make no guarantees about that) ([#8488](https://github.com/sveltejs/svelte/pull/8488))
* breaking: Remove `svelte/register` hook, CJS runtime version and CJS compiler output ([#8613](https://github.com/sveltejs/svelte/pull/8613))
* breaking: Stricter types for `createEventDispatcher` (see PR for migration instructions) ([#7224](https://github.com/sveltejs/svelte/pull/7224))
* breaking: Stricter types for `Action` and `ActionReturn` (see PR for migration instructions) ([#7224](https://github.com/sveltejs/svelte/pull/7224))
* breaking: Stricter types for `onMount` - now throws a type error when returning a function asynchronously to catch potential mistakes around callback functions (see PR for migration instructions) ([#8136](https://github.com/sveltejs/svelte/pull/8136))
* breaking: Overhaul and drastically improve creating custom elements with Svelte (see PR for list of changes and migration instructions) ([#8457](https://github.com/sveltejs/svelte/pull/8457))
* breaking: Deprecate `SvelteComponentTyped`, use `SvelteComponent` instead ([#8512](https://github.com/sveltejs/svelte/pull/8512))
* breaking: Make transitions local by default to prevent confusion around page navigations ([#6686](https://github.com/sveltejs/svelte/issues/6686))
* breaking: Error on falsy values instead of stores passed to `derived` ([#7947](https://github.com/sveltejs/svelte/pull/7947))
* breaking: Custom store implementers now need to pass an `update` function additionally to the `set` function ([#6750](https://github.com/sveltejs/svelte/pull/6750))
* breaking: Do not expose default slot bindings to named slots and vice versa ([#6049](https://github.com/sveltejs/svelte/pull/6049))
* breaking: Change order in which preprocessors are applied ([#8618](https://github.com/sveltejs/svelte/pull/8618))
* breaking: The runtime now makes use of `classList.toggle(name, boolean)` which does not work in very old browsers ([#8629](https://github.com/sveltejs/svelte/pull/8629))
* breaking: apply `inert` to outroing elements ([#8627](https://github.com/sveltejs/svelte/pull/8627))
### Minor Changes
* Add a way to modify attributes for script/style preprocessors ([#8618](https://github.com/sveltejs/svelte/pull/8618))
* Improve hydration speed by adding `data-svelte-h` attribute to detect unchanged HTML elements ([#7426](https://github.com/sveltejs/svelte/pull/7426))
* Add `a11y no-noninteractive-element-interactions` rule ([#8391](https://github.com/sveltejs/svelte/pull/8391))
* Add `a11y-no-static-element-interactions`rule ([#8251](https://github.com/sveltejs/svelte/pull/8251))
* Allow `#each` to iterate over iterables like `Set`, `Map` etc ([#7425](https://github.com/sveltejs/svelte/issues/7425))
* Improve duplicate key error for keyed `each` blocks ([#8411](https://github.com/sveltejs/svelte/pull/8411))
* Warn about `:` in attributes and props to prevent ambiguity with Svelte directives ([#6823](https://github.com/sveltejs/svelte/issues/6823))
### Patch Changes
* Bind `null` option and input values consistently ([#8312](https://github.com/sveltejs/svelte/issues/8312))
* Allow `$store` to be used with changing values including nullish values ([#7555](https://github.com/sveltejs/svelte/issues/7555))
* Initialize stylesheet with `/* empty */` to enable setting CSP directive that also works in Safari ([#7800](https://github.com/sveltejs/svelte/pull/7800))
* Treat slots as if they don't exist when using CSS adjacent and general sibling combinators ([#8284](https://github.com/sveltejs/svelte/issues/8284))
* Fix transitions so that they don't require a `style-src 'unsafe-inline'` Content Security Policy (CSP) ([#6662](https://github.com/sveltejs/svelte/issues/6662)).
* Explicitly disallow `var` declarations extending the reactive statement scope ([#6800](https://github.com/sveltejs/svelte/pull/6800))
* Allow `#each` to iterate over iterables like `Set`, `Map` etc ([#7425](https://github.com/sveltejs/svelte/issues/7425))
* Warn about `:` in attributes and props to prevent ambiguity with Svelte directives ([#6823](https://github.com/sveltejs/svelte/issues/6823))
* Improve error message when trying to use `animate:` directives on inline components ([#8641](https://github.com/sveltejs/svelte/issues/8641))
## 3.59.1

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