v3.9.0
chore: Rename Twitter links/labels to X (#10509)
feat(core): new `postBuild({routesBuildMetadata})` API, deprecate `head` attribute + v4 future flag (#10850)
feat(blog): Add support for email social icon + resize default social icon a bit (#11425)
feat(theme): Allow resetting colorMode to System/OS value (#10987)
feat(core): Add `i18n.localeConfigs[locale].{url,baseUrl}` config options (#11316)