- **language-core:** added option to resolve hidden extensions ([#190](https://github.com/volarjs/volar.js/issues/190))

- **language-core:** reimplemented multi-source mapping ([#194](https://github.com/volarjs/volar.js/issues/194))

- **language-core:** completed support for multi-source mapping in plugin mode ([#197](https://github.com/volarjs/volar.js/issues/197))

- **language-server:** added support for Workspace Diagnostics ([#199](https://github.com/volarjs/volar.js/issues/199))

- **language-server:** accurately defined language server capabilities ([#185](https://github.com/volarjs/volar.js/issues/185))

- **typescript:** added option to prevent offset in plugin mode ([#191](https://github.com/volarjs/volar.js/issues/191))

- **language-service:** fixed conversion of markdown links

- **vscode:** showed error on missing TypeScript lib ([#195](https://github.com/volarjs/volar.js/issues/195)) - Thanks @msujew

- **monaco:** fixed Monaco selection ranges conversion ([#198](https://github.com/volarjs/volar.js/issues/198)) - Thanks @remcohaszing

- **vscode:** auto insertion request now exits early on vscode ([#157](https://github.com/volarjs/volar.js/issues/157))

- **language-server:** improved snapshot reusability ([#196](https://github.com/volarjs/volar.js/issues/196))

- **typescript:** skips `searchExternalFiles` if extra extensions are empty

- **typescript:** added `setup` option for `createLanguageServicePlugin`, `createAsyncLanguageServicePlugin`

- **language-core:** `LanguagePlugin` now requires the first generic parameter to specify the script ID type

- **language-core:** `updateVirtualCode` is now optional, if not provided, `createVirtualCode` is always called to update source script

- **language-server:** `createTypeScriptProjectProvider` has been renamed to `createTypeScriptProject`

- **language-server:** `createSimpleProjectProvider` has been renamed to `createSimpleProject`

- **language-server:** no longer handles `@vscode/l10n`

- **language-server:** removed `InitializationOptions` interface

- **language-service:** LSP related logic has been changed to be completely based on URI ([#182](https://github.com/volarjs/volar.js/issues/182))

- **language-service:** `LanguageServiceEnvironment#workapceFolder` is now a URI array and has been renamed to `workspaceFolders`

- **language-service:** `provideAutoInsertionEdit` has been renamed to `provideAutoInsertSnippet`

- **language-service:** normalized `LanguageService` API name format

- **labs:** Codegen Stacks debug feature has been removed (#184)